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GATE IN 1994
MCQ (Single Correct Answer)
+1
-0.3
$$\cos \phi $$ can be represented as
A
$${{{e^{i\phi }}\, - \,{e^{ - i\phi }}} \over 2}$$
B
$${{{e^{i\phi }}\, - \,{e^{ - i\phi }}} \over {2i}}$$
C
$${{{e^{i\phi }}\, + \,{e^{ - i\phi }}} \over i}$$
D
$${{{e^{i\phi }}\, + \,{e^{ - i\phi }}} \over 2}$$
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GATE IN Subjects
Engineering Mathematics
Linear Algebra Complex Variable Differential Equations Numerical Methods Calculus Vector Calculus Probability and Statistics Transform Theory
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