Top answers

Maths
A Level

Find the differential of (cos2x)^2

This is a question that can be answered in two ways: using the product rule and the rule for differentiating powers, we will do both to see how the two rules are equivalent. chain rule: split the function...

HC
Answered by Hoagy C. Maths tutor
6777 Views

How do you complete the square?

Completing the square is often useful when solving equations! An example: x+6x-7=0. Step 1) We want to move the constant to the right hand side: x2+6x=7. Step 2) Now, add the squar...

LW
Answered by Lisa W. Maths tutor
4179 Views

What is the sum of the geometric series 1 + 1/3 + 1/9 + 1/27 ...

The geometric series takes the form of ax^n where n is a number from 0 to infinity with 0 being the first number in the series. 

The sum of this series is S = a + ax + ax^2 + ... 

If we brea...

RT
Answered by Ryan T. Maths tutor
4798 Views

Integrate (3x^2-x^3)dx

With integration like this, you can look at each appearance of x individually.  Firstly there is a rule to follow that is the power of X in each case increases by 1 and then that increase power divides th...

JT
Answered by Josh T. Maths tutor
8873 Views

x = t^3 + t, y = t^2 +1, find dy/dx

dy/dx = dy/dt x dt/dx

x = t3 + t

dx/dt = 3t2 +1

y = t2 +1

dy/dt = 2t

dy/dx = 2t x (1 / (3t2 +1) )

= 2t / (3t2

SK
Answered by Sukhwinder K. Maths tutor
6055 Views

We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2026 by IXL Learning