What is the integral of sqrt(144-x^2) ?

The integral of sqrt(144-x^2) is 72(arcsin(1/12 x)+1/2 sin(2arcsin(1/12 x)))+C

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integral of sqrt(144-x^2)

\int 144 - x^{2} d x

72 (arcsin (\frac{1}{12} x) + \frac{1}{2} sin (2 arcsin (\frac{1}{12} x))) + C

Solution steps

\int 144 - x^{2} d x

Apply Trigonometric Substitution

: \int 144 cos^{2} (u) d u

= \int 144 cos^{2} (u) d u

Take the constant out:

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

= 144 \cdot \int cos^{2} (u) d u

Rewrite using trig identities

= 144 \cdot \int \frac{1 + cos ( 2 u )}{2} d u

Take the constant out:

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

= 144 \cdot \frac{1}{2} \cdot \int 1 + cos (2 u) d u

Apply the Sum Rule:

\int f (x) \pm g (x) d x = \int f (x) d x \pm \int g (x) d x

= 144 \cdot \frac{1}{2} (\int 1 d u + \int cos (2 u) d u)

\int 1 d u = u

\int cos (2 u) d u = \frac{1}{2} sin (2 u)

= 144 \cdot \frac{1}{2} (u + \frac{1}{2} sin (2 u))

Substitute back

u = arcsin (\frac{1}{12} x)

= 144 \cdot \frac{1}{2} (arcsin (\frac{1}{12} x) + \frac{1}{2} sin (2 arcsin (\frac{1}{12} x)))

Simplify

144 \cdot \frac{1}{2} (arcsin (\frac{1}{12} x) + \frac{1}{2} sin (2 arcsin (\frac{1}{12} x))) : 72 (arcsin (\frac{1}{12} x) + \frac{1}{2} sin (2 arcsin (\frac{1}{12} x)))

= 72 (arcsin (\frac{1}{12} x) + \frac{1}{2} sin (2 arcsin (\frac{1}{12} x)))

Add a constant to the solution

= 72 (arcsin (\frac{1}{12} x) + \frac{1}{2} sin (2 arcsin (\frac{1}{12} x))) + C

x \to - 1 lim (x^{3} + 2 x^{2} - 3 x - 4)

\frac{d y}{d x} = (x y)^{2}

x^{(2)} sin (x)

\int_{0}^{\frac{π}{2}} sin^{3} (3 x) d x

(2 x - 1)^{2} ln (2 x - 1)

What is the integral of sqrt(144-x^2) ?
The integral of sqrt(144-x^2) is 72(arcsin(1/12 x)+1/2 sin(2arcsin(1/12 x)))+C