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Given that: y = 5x^3 + 7x + 3. What is dy/dx? What is d^2y/dx^2?

Firslty, the common rule when differentiating is nx m has the derivative of (n)(m)x m-1 . Therefore applying this rule to each individual component of the function: dy/dx=(5)(3)x 3-1 +(7)(1)x 1-1 +(3)(0) =(1...
ME
Answered by Monty E. Maths tutor
7232 Views

Differentiate y=x/sin(x)

This equation has one function of x divided by another function of x, we therefore have to use the quotient rule and is written in the form f(x)/g(x). The quotient rule is therefore f'(x)g(x)-g'(x)f(x)/g 2 (...
RF
Answered by Rowan F. Maths tutor
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What is the integral of ln(x)? Hint: use parts for this integration

We use parts for this integration even though there is only one term! make ln(x)=1ln(x) How to do integration by parts If you have a function that you need to integrate that is two functions of x multiplied ...
JW
Answered by Joseph W. Maths tutor
7796 Views

Find dy/dx where y=e^(4xtanx)

Here, we must apply both chain and product rules. The chain rule can be used to find the derivative of a function in the form e f(x) , like this one. However it is useful to know that this will result in the...
MK
Answered by Monique K. Maths tutor
8398 Views

How do you integrate by parts?

This is one of the trickier methods of integration, and it requires some practise. The basic idea is to split a function which would be difficult to integrate into two parts. Differentiating one part and int...
HM
Answered by Harry M. Maths tutor
5684 Views