MCQS

# Complex Numbers MCQS With Solution | Solve Complex Numbers MCQS

40. sin iz=

A. sinh z

B. sinh iz

C. isin z

D. isinh z

41. cosiz=

A. cosh z

B. cosh iz

C. i cos z

D. i cosh z

42. tan iz=

A. tanh z

B. tanh iz

C. itan z

D. itanh z

43. sinh iz=

A. sin z

B. isin z

C. sinh z

D. isinh z

44. cosh iz=

A. cos z

B. i cos z

C. cosh z

D. i cosh z

45. tanh iz=

A. tan z

B. itan z

C. tanh z

D. itanh z

46. Multiplication of a vector z by … rotates the vector z counterclockwise through an angle of measure α.

A. e^α

B. e^−α

C. e^iα

D. e^−iα

47. −3 − 4i=

A. 5e^itan^−1 4/3

B. 5e^i(− tan^−1 4/3 )

C. 5e^i(π−tan^−1 4/3 )

D. 5e^i(π+tan^−1 4/3 )

48. For any complex number z, log z=

A. ln |z| + i arg z

B. ln z + i arg |z|

C. ln |z| + i arg |z|

D. All of these

49. Which number(s) has(have) no complex logarithm?

A. 0

B. Negative real numbers

C. Non positive real numbers

D. None of these

50. For any complex number z, Logz=

A. ln |z| + i Arg z

B. ln z + i Arg |z|

C. ln |z| + i Arg |z|

D. All of these

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