What is expand cos(2t)U(t-pi) ?

The solution to expand cos(2t)U(t-pi) is tUcos(2t)-piUcos(2t)

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expand cos(2t)U(t-pi)

expand

cos (2 t) U (t - π)

t U cos (2 t) - π U cos (2 t)

Solution steps

cos (2 t) U (t - π)

= U cos (2 t) (t - π)

Apply the distributive law:

a (b - c) = ab - a c

a = cos (2 t) U, b = t, c = π

= cos (2 t) U t - cos (2 t) U π

= t U cos (2 t) - π U cos (2 t)

(x + y)^{2}

(e^{x} + 1)^{2}

(3 - i)^{8}

(x + 2) (x - 2)

(x + 5)^{2}

What is expand cos(2t)U(t-pi) ?
The solution to expand cos(2t)U(t-pi) is tUcos(2t)-piUcos(2t)