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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...

Answered by Josh T. • Maths tutor

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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

Answered by Sukhwinder K. • Maths tutor

5421 Views

Solve 7x - 14 = 4x + 7

Like all equations, you're going to start off by getting all the x's on the same side of the = side and all the rest on the other side. So we start off with 7x-14=4x+7. Moving the x's to one side means th...

Answered by Daan F. • Maths tutor

7849 Views

Find the value of 4a + 3b when a=2 and b=5

This question is asking us to place a number in the place of their corresponding letter, so as the letter a is attached to the number two, whenever we see the letter a in the equation we would replace it ...

Answered by Roisin M. • Maths tutor

13695 Views