engineering recuitment NPCIL Plant Operator Mock Test Mathematics Integral Calculus Indefinite Integrals
\(\rm \int \frac {1}{\sqrt{4-9x^2}}dx\) is equal to ?
1
\(\rm \sin^{-1} \left(\frac {3x} {2} \right)\) + c
2
\(\rm \frac 1 3 \sin^{-1} \left(\frac {3x} {2} \right)\) + c
3
\(\rm \frac 1 3 \sin^{-1} \left(\frac {x} {2} \right)\) + c
4
None of the above