What is expand 1/2 (e^{t/2}+e^{-t/2}) ?

The solution to expand 1/2 (e^{t/2}+e^{-t/2}) is 1/2 e^{t/2}+1/2 e^{-t/2}

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expand 1/2 (e^{t/2}+e^{-t/2})

expand

\frac{1}{2} (e^{\frac{t}{2}} + e^{- \frac{t}{2}})

\frac{1}{2} e^{\frac{t}{2}} + \frac{1}{2} e^{- \frac{t}{2}}

Solution steps

\frac{1}{2} (e^{\frac{t}{2}} + e^{- \frac{t}{2}})

Apply the distributive law:

a (b + c) = ab + a c

a = \frac{1}{2}, b = e^{\frac{t}{2}}, c = e^{- \frac{t}{2}}

= \frac{1}{2} e^{\frac{t}{2}} + \frac{1}{2} e^{- \frac{t}{2}}

f^{'} (2) (5 + ∣ x - 2 ∣)

δ, (x - 2)

π (x)^{2} (3 x + 1)

x \cdot x^{2}

(z - e^{i \frac{π}{4}}) (z - e^{- i \frac{π}{4}})

What is expand 1/2 (e^{t/2}+e^{-t/2}) ?
The solution to expand 1/2 (e^{t/2}+e^{-t/2}) is 1/2 e^{t/2}+1/2 e^{-t/2}