What is expand cos^2(t)-sin^2(t)u(t-pi) ?

The solution to expand cos^2(t)-sin^2(t)u(t-pi) is cos^2(t)-tusin^2(t)+piusin^2(t)

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expand cos^2(t)-sin^2(t)u(t-pi)

expand

cos^{2} (t) - sin^{2} (t) u (t - π)

cos^{2} (t) - t u sin^{2} (t) + π u sin^{2} (t)

Solution steps

cos^{2} (t) - sin^{2} (t) u (t - π)

= cos^{2} (t) - u sin^{2} (t) (t - π)

Expand

- sin^{2} (t) u (t - π) : - t u sin^{2} (t) + π u sin^{2} (t)

= cos^{2} (t) - t u sin^{2} (t) + π u sin^{2} (t)

(x^{2} + 2 x) e^{x^{2} + 2 x}

\frac{d ^{2}}{d x ^{2}} ((y) (\frac{1}{x} - \frac{2}{y ^{3}}))

(2 - \frac{1}{3} x)^{2}

\frac{1 - x ^{2}}{( x ^{2} + 1 ) ^{2}}

(a + ib)^{4}

What is expand cos^2(t)-sin^2(t)u(t-pi) ?
The solution to expand cos^2(t)-sin^2(t)u(t-pi) is cos^2(t)-tusin^2(t)+piusin^2(t)