What is expand cos(3t)U(t-(7pi)/6) ?

The solution to expand cos(3t)U(t-(7pi)/6) is tUcos(3t)-(7piUcos(3t))/6

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expand cos(3t)U(t-(7pi)/6)

expand

cos (3 t) U (t - \frac{7 π}{6})

t U cos (3 t) - \frac{7 π U cos ( 3 t )}{6}

Solution steps

cos (3 t) U (t - \frac{7 π}{6})

= U cos (3 t) (t - \frac{7 π}{6})

Apply the distributive law:

a (b - c) = ab - a c

a = cos (3 t) U, b = t, c = \frac{7 π}{6}

= cos (3 t) U t - cos (3 t) U \frac{7 π}{6}

= t U cos (3 t) - \frac{7 π}{6} U cos (3 t)

Simplify

t U cos (3 t) - \frac{7 π}{6} U cos (3 t) : t U cos (3 t) - \frac{7 π U cos ( 3 t )}{6}

= t U cos (3 t) - \frac{7 π U cos ( 3 t )}{6}

\frac{x ^{2} + 9}{( x + 9 ) ^{2}}

\frac{d}{d x} (3 + (\frac{2}{m ( x + 2 )}))

\frac{\partial}{\partial y} ((z) (x^{2} y^{4} z + z^{2}))

(x e^{- x} + 1) e^{x}

\frac{8 ( 2 ln ( 2 ) - 1 )}{e ^{4}}

What is expand cos(3t)U(t-(7pi)/6) ?
The solution to expand cos(3t)U(t-(7pi)/6) is tUcos(3t)-(7piUcos(3t))/6