Top answers

Maths
A Level

How do I sketch a graph of a polynomial function?

To sketch a polynomial function (a polynomial is a function involving powers of x, for example y = x3 + 2x2 - 13x + 10):

1. Start by differentiating the function to ...

RA
Answered by Rose A. Maths tutor
8644 Views

Find dy/dx for y=5x^3-2x^2+7x-15

Step 1: To differentiate an equation there is a simple rule to follow. For y=axn dy/dx=anxn-1. so for an example y=x3, dy/dx=3x2. Therefore we just apply thi...

MT
Answered by Matthew T. Maths tutor
12579 Views

How do you integrate by parts?

When you are faced with an integral which is a product, such as x.cos(x), you may be able to integrate it by parts. The statement of the integration by parts is that:

∫u(dv/d...

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Answered by Tim W. Maths tutor
6392 Views

How do you differentiate parametric equations?

Parametric equations are a set of equations which both depend on the same variable, such as t. An example of this would be:

x = 2t2​+1 and y = t​4​-2

A...

TW
Answered by Tim W. Maths tutor
6006 Views

How do you go about differentiating a^x functions?

A key point to remember here is that a^x could mean the base (a) is not “e”-that special number which has a gradient function, dy/dx (the differential), EQUAL to the function itself, y=e^x. When "a&q...

AW
Answered by Adam W. Maths tutor
81127 Views

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