Complex Variables and Partial Differential Equations (3140610) MCQs

MCQs of Complex Variable-Integration, Sequence and Series

Showing 11 to 19 out of 19 Questions
11.

Select the correct relation for C f(z) dz _____ C f(z) dz .

(a)

=

(b)

(c)

(d)

none of these

Answer:

Option (b)

12.

A sequence 1-1n2+ i 2+4n converges to _____ .

(a)

1-2i

(b)

1+2i

(c)

1+i

(d)

none of these

Answer:

Option (b)

13.

The radius of convergence of power series 1 1+1nn2 zn is _____ .

(a)

1e

(b)

e

(c)

e2

(d)

none of these

Answer:

Option (a)

14.

The radius of convergence of power series  0 2nn! zn is _____ .

(a)

0

(b)

1

(c)

2

(d)

Answer:

Option (d)

15.

For which condition the series 11-(z-1)=1+(z-1)+(z-1)2+....... is convergent?

(a)

z<1

(b)

z1<1

(c)

z<0

(d)

none of these

Answer:

Option (b)

16.

Consider z<1 , then the Maclaurin series of log 1+z is _____ .

(a)

z+z22+z33+......

(b)

z-z22+z33-......

(c)

-z-z22-z33-......

(d)

none of these

Answer:

Option (b)

17.

The Maclarin series of sin z is _____ .

(a)

0 -1n z2n+1(2n+1)!

(b)

0 zn+1(2n+1)!

(c)

0  zn(2n)!

(d)

none of these

Answer:

Option (a)

18.

Let f(z) be analytic function in a simply connected domain D and let C be any closed continuous rectifiable curve in D, then

(a)

Cf(z) dz=0

(b)

Cf(z) dz=2πi

(c)

Cf(z) dz=1

(d)

None of these

Answer:

Option (a)

19.

If f(z) is analytic function in the entire z-plane and bounded everywhere, then

(a)

f(z)=z

(b)

f(z)=sinz

(c)

f(z)=constant

(d)

None of these

Answer:

Option (c)

Showing 11 to 19 out of 19 Questions