Question

Integrate the following:

Answer 1

\[∫ \frac{ 5 }{ \sqrt{4-x ^{2}} }dx\]

Answer 2

Did ya try solvin it ?

Answer 3

@bmelyk

Answer 4

i dont know how to state it.

Answer 5

start*

Answer 6

hint: use the substitution x = 2sin u

Answer 7

how do i start it though?

Answer 8

using x = 2sin u

dx = 2cos u

\[\int\limits {5 \times 2 \cos u \over \sqrt{ 4 - 4\sin^2 u}} du = \int\limits { 5 \times 2\cos u \over 2\sqrt{1-\sin^2u}}du\]

Try taking it from here

Answer 9

i dont get what you are doing there.

Answer 10

tell me which part you don't understand? The choice of substitution, the substitution itself?

Answer 11

choice of substitution

Answer 12

http://tutorial.math.lamar.edu/Classes/CalcII/TrigSubstitutions.aspx