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Differentiate sin(2x)/x^2 w.r.t. x

Quotient Rule:d(u/v)/dx = (vu' - uv')/(v2)u = sin(2x) => u' = 2cos(2x)v = x2 => v' = 2x=> (2x2cos(2x) - 2xsin(2x))/(x4)Product Rule:d(uv)/dx = vu' + uv...

VL
Answered by Vinh L. Maths tutor
7999 Views

Prove that the square of an odd number is always 1 more than a multiple of 4

First, we need to define what an odd number is. An odd number can be expressed as the product of 2n+1, where n can be any whole number bigger than 0. You can check this by inputting a few numbers for n (s...

ED
Answered by Emanuel D. Maths tutor
3429 Views

Solve 7x-5>22-2x

9x>27X>3

LP
Answered by Lucy P. Maths tutor
2792 Views

Find the first and second derivative of f(x) = 6/x^2 + 2x

We can rewrite the function to eliminate the annoying 1/x^2 expression by knowing this can also be expressed by x^-2.f(x) = 6x^-2 + 2xNow we can differentiate this function term by term, first 6x^-2. We k...

Answered by Maths tutor
2793 Views

Expand the following expression and simplify: (3x+2)(4x+5)

12x2 + 15x + 8x + 10 = 12x2 + 23x + 10

PD
Answered by Priscilla D. Maths tutor
4070 Views

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