GATE Papers >> ECE >> 2015 >> Question No 155

Question No. 155 ECE | GATE 2015

Let $ x(t)=\alpha\;s(t)+s(-t) $ with $ s(t)=\beta e^{4t}u(t) $ , where $ u(t) $ is unit step function . If the bilateral Laplace transform of $ x(t) $ is

Xs = 16s2- 16-4 <Re{s}<4;

Then the value of $ \beta $ is______.


Answer : -2


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