What is expand tU(t+2)+cos(t-1)U(t-1) ?

The solution to expand tU(t+2)+cos(t-1)U(t-1) is t^2U+2tU+tUcos(t-1)-Ucos(t-1)

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expand tU(t+2)+cos(t-1)U(t-1)

expand

t U (t + 2) + cos (t - 1) U (t - 1)

t^{2} U + 2 t U + t U cos (t - 1) - U cos (t - 1)

Solution steps

t U (t + 2) + cos (t - 1) U (t - 1)

= t U (t + 2) + U cos (t - 1) (t - 1)

Expand

t U (t + 2) : t^{2} U + 2 t U

= t^{2} U + 2 t U + U cos (t - 1) (t - 1)

Expand

U cos (t - 1) (t - 1) : t U cos (t - 1) - U cos (t - 1)

= t^{2} U + 2 t U + t U cos (t - 1) - U cos (t - 1)

{5 (2 x^{2} z^{4})^{3} (x^{3} y^{3})^{2}}^{2}

\frac{( a + a \cdot b ) ^{2}}{c ( a - b )}

- a \cdot (ln (b \cdot N) + 1)

2 (x + y) d x - x (x + 2 y - 2) d y

(2 - m) ln (3 x + 100)

What is expand tU(t+2)+cos(t-1)U(t-1) ?
The solution to expand tU(t+2)+cos(t-1)U(t-1) is t^2U+2tU+tUcos(t-1)-Ucos(t-1)