GATE (TF) Textile 2020 Question Paper Solution | GATE/2020/TF/03

Question 03 (Textile Engineering & Fibre Science)
Q.3 Laplace transform of cosh(t) is
(A)\frac{1}{s^{2}-1}
(B)\frac{s}{s-1}
(C)\frac{s}{s^{2}-1}
(D)\frac{s}{s^{2}+1}
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cosh(t)

We know –

cosh(at)=\frac{s}{s^2-a^2} a=1

cosh(t)=\frac{s}{s^2-1^2}

cosh(t)=\frac{s}{s^2-1} (Ans)

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