Top answers

Maths
A Level

How do you differentiate by first principles?

Firstly, what are we trying to achieve by differentiating a function? Differentiation allows us to compute the rate of change of a function at any point along ...

Answered by Daniel B. Maths tutor
6168 Views

What is 'Chain Rule' and why is it useful?

The chain rule is most commonly seen in Leibniz's notatio...

Answered by Tully K. Maths tutor
4702 Views

How do I find the maximum/minimum of a function?

The maximum/minimum of a function are the points where the first derivative (the gradient) of the function is zero.

So with a function of the form y=f(x), you must take the derivative (dy/dx) ...

Answered by Ellie L. Maths tutor
32459 Views

How to find out where 2 lines cross/simultaneous equations

If we have the 2 lines

line 1 - 3y=4x+2 and line 2 - 6y=7x+3

Firstly we would look for when the y's or x's are multiples of each other in this case the y's are multiples of each other ...

Answered by Jennifer L. Maths tutor
5240 Views

What is the integral of sin^2(x)?

From the double angle formula for cosine, we know that cos(2x)=cos2(x)-sin2(x). Also, we know that sin2(x)+cos2(x)=1. So by substituting the second formula ...

Answered by Jonathan B. Maths tutor
5388 Views

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