railway RRB JE (CBT I + CBT II) Mock Test 2024 Engineering Mathematics Complex Variables Complex Functions
\(\sqrt[3]{{\cos x - j\sin x}}\) किसके बराबर है?
1
(cos x)1/3 - j(sin x)1/3
2
\(\sqrt[3]{{\cos^2 x - j\sin^2 x}}\)
3
\(\cos \frac{x}{3} - j\sin \frac{x}{3}\)
4
\(\sin \frac{x}{3} - j\cos \frac{x}{3}\)