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Popular >

simplify 21e^{-t}u(t)

Solution

simplify

21 e^{- t} u (t)

Solution

\frac{21 t u}{e ^{t}}

Solution steps

21 e^{- t} u (t)

Apply exponent rule:

a^{- b} = \frac{1}{a ^{b}}

= 21 \cdot \frac{1}{e ^{t}} t u

Multiply fractions:

a \cdot \frac{b}{c} = \frac{a \cdot b}{c}

= \frac{1 \cdot 21 u t}{e ^{t}}

Multiply the numbers:

1 \cdot 21 = 21

= \frac{21 t u}{e ^{t}}

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Frequently Asked Questions (FAQ)

What is 21e^{-t}u(t) ?
The solution to 21e^{-t}u(t) is (21tu)/(e^t)