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

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

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

expand

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

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

Solution steps

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

Apply the distributive law:

a (b + c) = ab + a c

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

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

(A e^{- k x} + B e^{k x})^{2}

im x \Rightarrow - 2 (x^{3} + 8 x + 2)

\frac{( x + y ) ^{2}}{x y}

\frac{1}{( y + 2 ) ( y - 5 ) ( y + 7 )}

\frac{( x ^{2} + 5 ) ^{3}}{6}

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