What is sinh(7t)+(2t+1)U(t-1) ?

The solution to sinh(7t)+(2t+1)U(t-1) is sinh(7t)+2t^2U-tU-U

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simplify sinh(7t)+(2t+1)U(t-1)

simplify

sinh (7 t) + (2 t + 1) U (t - 1)

sinh (7 t) + 2 t^{2} U - t U - U

Solution steps

sinh (7 t) + (2 t + 1) U (t - 1)

= sinh (7 t) + U (2 t + 1) (t - 1)

Expand

U (2 t + 1) (t - 1) : 2 t^{2} U - t U - U

= sinh (7 t) + 2 t^{2} U - t U - U

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What is sinh(7t)+(2t+1)U(t-1) ?
The solution to sinh(7t)+(2t+1)U(t-1) is sinh(7t)+2t^2U-tU-U