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How do you differentiate y=sin(cos(x))?

To solve this question we will use the chain rule, as we can see that we have one function being applied to another, i.e sin is being applied to cos(x).

This means we are able to replace the origin...

MP
Answered by Marcel P. Maths tutor
17016 Views

Kelly is trying to work out the two values of w for which 3w - w^3 = 2 Her values are 1 and -1 Are her values correct? You must show your working.

Firstly substitute her first value into the equation so w=1 giving (3 x 1) - (1)^3 = 3 - 1= 2 so her first value for w is correct Next substitute the second value into the equation so w= -1 giving (3 x -1...

EN
Answered by Eve N. Maths tutor
10069 Views

GCSE: How do you find the bearing of point B from A?

  1. Draw a line pointing North from point A.

  2. Use a ruler to draw a line that joins points A and B.

  3. Use a protractor to measure the angle between the line that is ...

MP
Answered by Marcel P. Maths tutor
15104 Views

Work out 2 and 3/4 x 1 and 5/7 Give your answer as a mixed number in its simplest form.

First make each fraction into an improper fraction so on the top of the first fraction it would be 3 + (2 x 4) = 3 + 8 = 11 therefore first fraction = 11/4 for the second fraction the top = 5 + (1 x 7) = ...

EN
Answered by Eve N. Maths tutor
28719 Views

Differentiate y=4x^2+3x+9

Use the rule of "bringing down the power" and then reducing the power by 1. Start with 4x^2. "Bring down" the 2 to make (4)(2)x^2, then reduce the power by 1 to make 8x. Now repeat thi...

TR
Answered by Tarryn R. Maths tutor
5564 Views

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