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Maths
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Differentiate the function f(x) = 2x^3 + (cos(x))^2 + e^x

When differentiating a function that is the sum of three different parts we can differentiate each part separately:

a) 2x3 is easy to differentiate. We remember the rule d/dx[axb

SP
Answered by Seth P. • Maths tutor
5974 Views

Solve x^2 = 4(x – 3)^2

To solve this equation we need to firast expand it. 

x2=4(x-3)2

To do this we first expand the brackets. Remeber anything squared means times i...

AM
Answered by Annabel M. • Maths tutor
26412 Views

How do you go about sketching a curve when all you are given is the equation?

- First start by examining the equation. Is it in a recognisable form e.g. the equation of a circle/elipse etc.  - If not, is it in the form y = or x = (these are the most common ...

TS
Answered by Trishla S. • Maths tutor
3249 Views

how do you factorise a quadratic where there is a number in front of the x squared?

All quadratic equations have the form ax2 + bx + c.

If you take the equation: 2x2 + 4x + 2

In this example a=2, b=3 and c=2

In order to factorise wha...

SM
Answered by Sagar M. • Maths tutor
28260 Views

How do I simplify 10/(3 root5)?

To simplify this fraction, you must rationalise the denominator (lower half of the fraction) to get rid of the surd. A surd is an irrational number that cannot be simplified further to remove the square r...

LS
Answered by Laura S. • Maths tutor
13204 Views

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