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1. |
Laplace transform of \(\cos \left( {{\rm{\omega t}}} \right){\rm{is}}\frac{{\rm{s}}}{{{{\rm{s}}^2} + {{\rm{\omega }}^2}}}\). The laplace transform of e-2t cos(4t) is |
A. | \(\frac{{{\rm{s}} - 2}}{{{{\left( {{\rm{s}} - 2} \right)}^2} + 16}}\) |
B. | \(\frac{{{\rm{s}} + 2}}{{{{\left( {{\rm{s}} - 2} \right)}^2} + 16}}\) |
C. | \(\frac{{{\rm{s}} - 2}}{{{{\left( {{\rm{s}} + 2} \right)}^2} + 16}}\) |
D. | \(\frac{{{\rm{s}} + 2}}{{{{\left( {{\rm{s}} + 2} \right)}^2} + 16}}\) |
Answer» E. | |