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Maths
A Level

Solve the equation 3x^2/3 + x^1/3 − 2 = 0

Let u = x^1/3 

The equation can therefore be written as:

3u^2+u-2=0

This can be factorised to:

(3u-2)(u+1)+0 

Therefore: u = 2/3 or u = -1 OR x^1/3 = 2/3 or x^1/3 = -1

NH
Answered by Namita H. Maths tutor
9039 Views

How do you differentiate using the chain rule?

In order to differentiate using the chain rule,you first need to know the chain rule. Chain rule : dy/dt * dt/dx = dy/dx.

It is basic multiplication to get rid of the common factor of 'dt' in both ...

NG
Answered by Niha G. Maths tutor
3249 Views

A curve has equation y^3+2xy+x^2-5=0. Find dy/dx.

To find the derivative of this, we must differentiate each term with respect to x. This implies d/dx(y^3+2xy+x^2-5=0). We can differentiate each term seperately so d/dx(y^3+2xy+x^2-5=0) is equal to d/dx(y...

MC
Answered by Matthew C. Maths tutor
4752 Views

Differentiate y = x^3 + 2x^2 + 4x + 7

To differentiate you bring the power down and multiply it by any coefficients (numbers in front of the xs) then subtract one from the power 

So x3 becomes 3x2 

2x2...

CS
Answered by Courtney S. Maths tutor
3622 Views

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SV
Answered by Sarah V. Maths tutor
3575 Views

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