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Maths
A Level

What is the gradient of the curve y = 2x^3 at the point (2,2)?

Firstky differentiate to gain an equation for the gradient.Differentiating gives:dy/dx = 6x2Insert x = 2 into the above equation to find the gradient at that particular point of the curve.When ...

Answered by Emily R. Maths tutor
7289 Views

Show that the curve y =f(x) has exactly two turning points, where f(x)= x^3 - 3x^2 - 24x - 28

This question is about turning points of a curve, these occur when the gradient of a line is zero. In its current form, the equation of the curve tells us nothing about the gradient of the curve; it must ...

Answered by Joshua A. Maths tutor
4587 Views

How would you differentiate and integrate 2x^3?

Integration is the opposite of differentiation.First of all take your 2x3 So in differentiation you would times the power by the coefficient and then minus one from the power.This would give,6x...

Answered by Scarlett K. Maths tutor
6304 Views

How do you use the chain rule?


The chain rule is used to differentiate when there is a function within another function. For example y=(4x+6)0.5, y=(x+1)3The general formula for the chain rule is dy/dx= dy/d...

Answered by Frances C. Maths tutor
3052 Views

Find the turning value of the following function, stating whether the value is min or max, y = x^2 -6x + 5

First the student needs to differentiate the function to find dy/dx = 2x-6At dy/dx = 0, we know the curve is stationary. Now we can work out the x value such that x = 3Put x=3 back into the original equat...

Answered by Joseph W. Maths tutor
4141 Views

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