What is expand (cos(pi(1+n))-1)/(1+n) ?

The solution to expand (cos(pi(1+n))-1)/(1+n) is (-(-1)^n-1)/(1+n)

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expand (cos(pi(1+n))-1)/(1+n)

expand

\frac{cos ( π ( 1 + n ) ) - 1}{1 + n}

\frac{- ( - 1 ) ^{n} - 1}{1 + n}

Solution steps

\frac{cos ( π ( 1 + n ) ) - 1}{1 + n}

cos (π (1 + n)) = - (- 1)^{n}

= \frac{- ( - 1 ) ^{n} - 1}{1 + n}

\frac{2}{( s + 1 ) s}

sin^{2 (3 x^{2} - 1)} (x)

(e^{3 t}) (16 (- 3 e^{- 3 t} t - e^{- 3 t}))

0.125 + \frac{0.3125 x ^{2} + 10.625 x + 100}{x ( 0.125 x ^{2} + 3.5 x + 19.75 )}

[(x + 1) (x - 1)]^{2}

What is expand (cos(pi(1+n))-1)/(1+n) ?
The solution to expand (cos(pi(1+n))-1)/(1+n) is (-(-1)^n-1)/(1+n)