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Maths
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How do you prove the chain rule?

Given the problem f(x)=(y+x)^5 we use the chain rule as a tool to find the derivative. However, it is difficult to use effectively in further problems without understanding the mechanics of the function. ...

EC
Answered by Ella C. Maths tutor
4116 Views

A curve has the equation y = 2x cos(3x) + (3x^2-4) sin(3x). Find the derivative in the form (mx^2 + n) cos(3x)

y = 2x cos(3x) + (3x2-4) sin(3x)
dy/dx = (2x x -sin(3x) x 3) + (2 x cos(3x)) + (6x sin(3x)) + ((3x2-4) cos(3x) x 3)
dy/dx = -6x sin(3x) + 2 cos (3x) + 6x sin(3x)...

TL
Answered by Thomas L. Maths tutor
8716 Views

What is the nth term of the sequence 5, 7, 9, 11....

Difference between each number is +2Therefore the sequence is 2n + C
When n = 1 the value is (2x1) + C = 2 + C = 5C = 36
nth term is 2n + 3
CHECK
3rd term should be...

TL
Answered by Thomas L. Maths tutor
23251 Views

Find the value of x which satisfies the following equation 3 x2 + 6 x + 3 = 0

 3 x2 + 6 x + 3 = 0 . .../3 x2 + 2 x + 1 = 0(x+1)2=0x+1=0x=-1PROOF3 (-1)2 + 6 (-1) + 3 = 0

CT
Answered by Catherine T. Maths tutor
3058 Views

Find the antiderivative of the function f(x)=cos(2x)+5.

In order to find the antiderivative of the function we're given, we first have to study the general structure of the function. This function consists of a sum between cos(2x) and 5. Therefore, we have : F...

TD
Answered by Tutor149135 D. Maths tutor
4940 Views

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