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Radford Mathematics
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Добавлен 11 мар 2014
Welcome to Radford Mathematics! Your one-stop destination for all things high school math. Dive deep into the world of algebra, geometry, calculus, statistics, and more with our comprehensive tutorials, practice problems, and explanations. Whether you're a student looking to ace your exams, a teacher seeking innovative ways to explain complex concepts, or just a math enthusiast wanting to revisit foundational topics, Radford Mathematics has something for everyone. Subscribe and join our community of thinkers, learners, and math lovers!
Probability Question with a Two Way Table
We learn how to find probabilities from a two way table, also known as a contingency table, by working through a typical exam question.
Просмотров: 54
Видео
Modal Class Interval and Median class Interval for Grouped Continuous Data - Full Lesson and Example
Просмотров 63Месяц назад
We learn how to find the modal class interval as well as the median class interval, that's the interval containing the median, in a grouped frequency table. The data here is continuous data (time). TIME STAMPS / CHAPTERS 00:00 Introduction 00:50 Modal Class Interval 01:40 Median Class Interval, Class Interval with Median 01:44 Cumulative Frequency Column 03:01 Median’s Position Formula 06:39 Fi...
Normal Distribution with BOTH an Unknown Mean and Standard Deviation - Standard Normal Distribution
Просмотров 84Месяц назад
Given a normal distribution, learn how to find, both, an unknown mean and an unknown standard deviation using a 3 step method involving: - the standard normal bell curve and the z score, or z value - the inverse normal distribution function - simultaneous equations The method is explained and illustrated with a worked example. By the end of this video you'll know how to solve such problems.
Composite Functions Exam question - Unknown Function - Simultaneous Equations - IB AA SL & HL Maths
Просмотров 983 месяца назад
In this exam question on composite functions we see how to use simultaneous equations to find an unknown function. We have to find two unknown coefficients a and b and we're given two bits of information f[g(3)]=8 and g[f(-1)]=-3, which we use to find two equations involving a and b. We then use simultaneous equations to find them.
Composite Function Exam Question - Unknown Function - Hidden Quadratic - IB AA SL & HL Mathematics
Просмотров 1793 месяца назад
We work through an exam question on composite functions. We're given g(f(x)) as well as g(x) and we need to find two possible functions for f(x). The solution involves working with a quadratic equation. This question is based on a past IB AA SL & HL Mathematics Paper 1 question.
How to Find a Sine and Cosine Curve's Equation - y=a.sin(bx)+c, y=a.cos(bx)+c - Lesson & Examples 1
Просмотров 1223 месяца назад
In this video we learn how to find the equation of a sine curve and a cosine curve from its graph. We learn and use the formula for : - the Amplitude - the Wave Number (also called Angular frequency), which is inversely proportional to the period - the vertical translation. These trigonometric functions will be easy to tackle after we've watched this tutorial. CHAPTERS / TIMESTAMPS 00:00 Introd...
![Composite Function - Exam Question - Evaluate f[g(2)] and Find Expression - IGCSE & IB AA SL & HL](http://i.ytimg.com/vi/e5hgsUZUkBI/mqdefault.jpg)
Composite Function - Exam Question - Evaluate f[g(2)] and Find Expression - IGCSE & IB AA SL & HL
Просмотров 583 месяца назад
Given 2 functions f(x) and g(x), we see how to calculate, or evaluate, the composite function f(g(2)) and see how to find an expression for f(g(x)). We learn at a good pace with a clear worked example.
How to Split in a Ratio: 2 part ratios, 3 part ratios and more; 1:n, n:1
Просмотров 664 месяца назад
In this video we learn how to split, share, or divide, using ratios. Examples are given for 2 part ratios, such as 2:3 as well as 3 part ratios such as 2:3:4. We also learn how to express a given ratio as a ration 1:n or n:1. We learn through examples.
Function with 2 Unknown Coefficients - How to Find Them with Simultaneous Equations - Exam Questions
Просмотров 854 месяца назад
Given a function with 2 unknown coefficients, we learn how to find them using the coordinates of 2 points through which the function's curve passes. By substituting the coordinates of each point into the function's equation we obtain 2 equations in terms of the 2 unknown coefficients; simultaneous equations. We can then solve them using the method of elimination of the method of substitution. T...
Volume of Revolution About the X Axis - Explanation, Formula and its Derivation, Worked Example
Просмотров 474 месяца назад
In this lesson on integrals and integration, we learn how to calculate a volume of revolution about the x axis. The video is structured as follows: 00:00 Introduction 00:42 What’s a Volume of Revolution : Example 01:41 Formula for Volume of Revolution About the x axis 07:30 Worked Example 10:59 Conclusion
Quadratic Function with 2 Unknown Coefficients - Exam Question - IGCSE and IB Mathematics
Просмотров 544 месяца назад
In this video we learn how to find two unknown coefficients of a quadratic function using 2 points through which its curve passes. Successively using the x and y coordinates of each of the 2 points we create 2 equation involving the 2 unknown coefficients, which we can then solve simultaneously. Alongside this we also see how to find the minimum y value, the x intercepts (solutions to the quadr...
Venn Diagram - How to Draw One With the Correct Intersection - Must Know
Просмотров 875 месяцев назад
We learn how to draw a Venn diagram with the correct intersection (overlap) region. We see that the numbers given don't add, in the sense that the sum is bigger than the total number of elements in the set. We learn why that is and learn how to fill-in the Venn diagram.
IGCSE Extended Mathematics Paper 2 - Must Knows - Part 1
Просмотров 1735 месяцев назад
In this video we work through some must know questions for the IGCSE Extended Mathematics Paper 2 Exam. Topics covered: - laws of exponents - square roots (simplifying, rationalising the denominator) - coordinate geometry - inequalities - prime factorisation and HCF & LCM TIMESTAMPS / CHAPTERS 00:00 Introduction 00:56 Laws of Exponents 10:16 Square Roots 22:50 Coordinate Geometry 33:14 Inequali...
Displacement Vectors Part 1
Просмотров 765 месяцев назад
In this video we learn that a displacement vector is a vector whose components tell us how to get from one point to another. We see that we can write a displacement vector’s components using an xy grid as well as with a formula that is given. Given 2 points we can define 2 displacement vectors, vector AB and vector BA, that are opposites of each other.
Quadratics, Intersecting Parabola and Line, How to Find the the Points of Intersection by Hand.
Просмотров 2237 месяцев назад
Given a parabola and a line, we learn how to find the coordinates of their points of intersection without a calculator, by hand. The method is used is sometimes called "equating the y's" and is summarised in 3 steps: Step 1 : we equate the two expression we have for y and rearrange to form a solvable quadratic equation Step 2: we solve the quadratic equation, which leads to the x coordinates of...
Quadratics - Role of the Discriminant Delta on Equation and Parabola & Exam Questions involving it
Просмотров 1097 месяцев назад
Quadratics - Role of the Discriminant Delta on Equation and Parabola & Exam Questions involving it
Alternate Segment Theorem - Circle Theorems - Clearly Explained - Examples - IGCSE Mathematics
Просмотров 4117 месяцев назад
Alternate Segment Theorem - Circle Theorems - Clearly Explained - Examples - IGCSE Mathematics
Point-Slope Form of a Line & Converting it to Slope-Intercept and Standard Form - Full Lesson
Просмотров 537 месяцев назад
Point-Slope Form of a Line & Converting it to Slope-Intercept and Standard Form - Full Lesson
Sum of Interior Angles of a Polygon Formula & Regular Polygon Interior Angle Formula
Просмотров 958 месяцев назад
Sum of Interior Angles of a Polygon Formula & Regular Polygon Interior Angle Formula
How to Construct a Stem and Leaf Plot (Stem and Leaf Diagram) - One Variable Statistics Explained
Просмотров 1048 месяцев назад
How to Construct a Stem and Leaf Plot (Stem and Leaf Diagram) - One Variable Statistics Explained
How to a Make Frequency Density Histogram From a Grouped Frequency Table - Unequal Class Widths
Просмотров 4118 месяцев назад
How to a Make Frequency Density Histogram From a Grouped Frequency Table - Unequal Class Widths
Simultaneous Equations - Method of Substitution - Part 2
Просмотров 838 месяцев назад
Simultaneous Equations - Method of Substitution - Part 2
How to Find the Lower Quartile Q1, upper Quartile Q3 and Interquartile Range from a Frequency Table
Просмотров 8698 месяцев назад
How to Find the Lower Quartile Q1, upper Quartile Q3 and Interquartile Range from a Frequency Table
Example of How to Divide With Standard Form - Learn in 2 Minutes
Просмотров 498 месяцев назад
Example of How to Divide With Standard Form - Learn in 2 Minutes
Lower Quartile, Upper Quartile and Interquartile Range of a List of Discrete Data
Просмотров 7939 месяцев назад
Lower Quartile, Upper Quartile and Interquartile Range of a List of Discrete Data
How to Find Mean, Median and Mode from a Frequency Table of Discrete Data Without a Calculator
Просмотров 2179 месяцев назад
How to Find Mean, Median and Mode from a Frequency Table of Discrete Data Without a Calculator
Mean of Grouped Continuous Data - How to Calculate It
Просмотров 1919 месяцев назад
Mean of Grouped Continuous Data - How to Calculate It
Method of Elimination Solve Simultaneous Equations 3 Step Method - Example 2
Просмотров 1399 месяцев назад
Method of Elimination Solve Simultaneous Equations 3 Step Method - Example 2
Method of Elimination Solve Simultaneous Equations 3 Step Method - Example 1
Просмотров 549 месяцев назад
Method of Elimination Solve Simultaneous Equations 3 Step Method - Example 1
Simultaneous Equations with No Solutions or an Infinite Number of Solutions - Full Lesson
Просмотров 3809 месяцев назад
Simultaneous Equations with No Solutions or an Infinite Number of Solutions - Full Lesson
How do I actually start recording when I start the livestream?
Thanks man
Thank you for explaining how I can make my midnight live stream
You're the GOAT. Thank you for this.
Really glad it helped 😊
Thank you very much for your explanation sir.
Given one equation to factorise then how to know what is the x value sir?
Best video ❤
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Nah I won’t be doing that with only 1 like
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This is what I needed
Can they still hear your voice
Ya
So, for discrete they are not the same thing, but for continuous they are the same thing. Good to know.
This is such an amazing video. Exactly what i've been looking for. Great Job Keep it Up! :)
Thanks for such a kind comment! Really glad it helped 😊
Are u showing ur face?
Thank you so much, I’ve been wanting to record vr live, but it isn’t working, so I hope this helps! Thanks!
Great video professor👏🏽 I have two questions: 1 - if I have another trigonometric identity like sec or csc can I rewrite this identity in terms of sine or cossine or both to apply this substituion? 2 - how can I apply this substituion in those cases I have in the answer a angle in radians summing the variable on the argument of some trigonometric identity. Like for exemplo how to apply t substituion on the integral of dx/ sen(x) + cos(x). The answer of this integral is 1/sqrt 2 that multiply ln( csc( x + pi/4) - cot( x + pi/ 4) How can I reach the same result with t substituion.
I'M IN IPHONE!
Thank you this helped a lot.
IT DOESN NOT WORK
i cant find it
are u muted or can they heae ur voice
I have watched more than 20 videos related to this topic. Your tutorial is so easy to understand and very clearly explained. Thank you so much!
Thanks for such a kind comment!! I’m really glad this tutorial helped 😊
❤ thank so much sir it was a nice lesson
Thanks for your comment! I’m truly glad this video helped 😊
BRO MY TEACHER DIDN'T EVEN EXPLAIN THIS WELL. THANKS ALOT!
Thanks for the comment! Really glad it helped 😊
Tysm! Not I can screen record my mm2 gaming!
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It does boy
It does boy
Isn't the formula just the pythagorean theorem? Where the magnitude is c?
Absolutely! 😊
Thx for this!!
You teach better than A school maths teacher
It’s not working for me, it keeps giving me the invalid session error
thanks🙏🙏🙏🙏
I always multiplied on numerator and denominator. Turns out, thid techique sometimes is faster than the rest.
Do you have a similar example for the multivariate case? For the function z = f(x, y) if the second derivative test fails. What are we supposed to do in such a case? Thank you very much.
thanks bro❤
PLEASE 6:31 IS NOT WORKING PLS HELP
Oh its not working put iOS or android or samasung that’s it or maybe u did not follow
@@CalebGrayAlcantarai followed
r there no other comments
i was gonna make my x 1 million thanks for telling beforehand!
you saved me!!! many thanks.
Really glad it helped 😊
What do you do if you get a 403 error?
Only good tutorial on yt, rest of them are bullshit
Really glad it helped 😊
Thank u do much
Really glad it helped 😊
Thank you so much this is a life saver?
Thanks
Really glad it helped 😊
THANKYOUU😭😭😭❤️❤️
I’m really glad it helped 😊
thank u very much,great explanation hope u become muslim]
I’m truly glad it helped 😊
This has helped me alot thank you so very much for explaining it very simply ❤