1
GATE ECE 2022
Numerical
+1
-0.33

A simple closed path C in the complex plane is shown in the figure. If

$$\oint\limits_c {{{{2^z}} \over {{z^2} - 1}}dz = - i\pi A}$$,

where $$i = \sqrt { - 1}$$, then the value of A is ___________ (rounded off to two decimal places). 2
GATE ECE 2022
MCQ (More than One Correct Answer)
+1
-0.33

Consider the following series:

$$\sum\limits_{n = 1}^\infty {{{{n^d}} \over {{c^n}}}}$$

For which of the following combinations of c, d values does this series converge?

A
c = 1, d = $$-$$1
B
c = 2, d = 1
C
c = 0.5, d = $$-$$10
D
c = 1, d = $$-$$2
3
GATE ECE 2017 Set 2
+1
-0.3
The residues of a function $$f\left( z \right) = {1 \over {\left( {z - 4} \right){{\left( {z + 1} \right)}^3}}}$$ are
A
$${{ - 1} \over {27}}$$ and $${{ - 1} \over {125}}$$
B
$${1 \over {125}}$$ and $${{ - 1} \over {125}}$$
C
$${{ - 1} \over {27}}$$ and $${1 \over 5}$$
D
$${1 \over {125}}$$ and $${{ - 1} \over 5}$$
4
GATE ECE 2016 Set 3
Numerical
+1
-0
For $$f\left( z \right) = {{\sin \left( z \right)} \over {{z^2}}},$$ the residue of the pole at $$z=0$$ ________.
GATE ECE Subjects
Signals and Systems
Network Theory
Control Systems
Digital Circuits
General Aptitude
Electronic Devices and VLSI
Analog Circuits
Engineering Mathematics
Microprocessors
Communications
Electromagnetics
EXAM MAP
Joint Entrance Examination