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Q:

Evaluate (exp(-at)u(t))*u(t), u(t) being the heaviside function.

A) (1-exp(at)) u(t)/a B) (1-exp(at)) u(-t)/a
C) (1-exp(-at)) u(t)/a D) (1+exp(-at)) u(t)/a
 
Answer & Explanation Answer: C) (1-exp(-at)) u(t)/a

Explanation: Use the convolution formula.

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