a. odd signal
b. even signal
c. periodic signal
d. exponential signal
ANSWER: even signal
Explanation:
A signal can be said to be symmetric on Y-axis only when the symmetrical nature of curve obtained from the signal exhibits two equal portions of the curve exactly similar to each other over the Y-axis.
Since this kind of symmetry is shown by the signal has even (equal) form of distributions in terms of curve portions,amplitudes & time instants, they are generally referred as 'Even Signals'
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