What is the integral of 4/(sqrt(4-x^2)) ?

The integral of 4/(sqrt(4-x^2)) is 4arcsin(1/2 x)+C

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integral of 4/(sqrt(4-x^2))

\int \frac{4}{4 - x ^{2}} d x

4 arcsin (\frac{1}{2} x) + C

Solution steps

\int \frac{4}{4 - x ^{2}} d x

Take the constant out:

\int a \cdot f (x) d x = a \cdot \int f (x) d x

= 4 \cdot \int \frac{1}{4 - x ^{2}} d x

Apply Trigonometric Substitution

: \int 1 d u

= 4 \cdot \int 1 d u

Integral of a constant:

\int a d x = a x

= 4 \cdot 1 \cdot u

Substitute back

u = arcsin (\frac{1}{2} x)

= 4 \cdot 1 \cdot arcsin (\frac{1}{2} x)

Simplify

= 4 arcsin (\frac{1}{2} x)

Add a constant to the solution

= 4 arcsin (\frac{1}{2} x) + C

\int sin^{7} (3 x) cos (3 x) d x

\frac{d}{d x} (\frac{1}{4} x - \frac{1}{10})

\int 5 x e^{7 x} d x

f (x) = 2^{60}

4 y^{^{''}} + 4 y^{^{'}} + y = 0, y (2) = - 6, y^{^{'}} (2) = 4

What is the integral of 4/(sqrt(4-x^2)) ?
The integral of 4/(sqrt(4-x^2)) is 4arcsin(1/2 x)+C