展开 e^{-3(t-3)}-e^{-3(t-5)}

解答

展开

e^{- 3 (t - 3)} - e^{- 3 (t - 5)}

e^{- 3 t + 9} - e^{- 3 t + 15}

求解步骤

e^{- 3 (t - 3)} - e^{- 3 (t - 5)}

乘开

- 3 (t - 3) : - 3 t + 9

= e^{- 3 t + 9} - e^{- 3 (t - 5)}

乘开

- 3 (t - 5) : - 3 t + 15

= e^{- 3 t + 9} - e^{- 3 t + 15}

e x p an d - 3 (ln (5 x) + 1)

e x p an d \frac{4000 ( s ^{2} + 4 s + 4 )}{s ( s + 10 ) ( s + 100 )}

e x p an d \frac{10 ( 12 - 15 )}{3}

e x p an d a cos (b (x - c)) + d

e x p an d \frac{( 2 ( 1 - cot ( 2 x ) ) ( sec ^{2} ( 2 x ) ) - 2 ( csc ^{2} ( 2 x ) ) ( tan ( 2 x ) ) )}{( 1 - cot ( 2 x ) ) ^{2}}