What is laplacetransform 3cos(t) ?

The answer to laplacetransform 3cos(t) is (3s)/(s^2+1)

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laplacetransform 3cos(t)

laplace transform

3 cos (t)

\frac{3 s}{s ^{2} + 1}

Solution steps

L {3 cos (t)}

Use the constant multiplication property of Laplace Transform:

For function

f (t)

and constant

a : L {a \cdot f (t)} = a \cdot L {f (t)}

= 3 L {cos (t)}

L {cos (t)} : \frac{s}{s ^{2} + 1}

= 3 \cdot \frac{s}{s ^{2} + 1}

Refine

3 \frac{s}{s ^{2} + 1} : \frac{3 s}{s ^{2} + 1}

= \frac{3 s}{s ^{2} + 1}

y^{^{''}} - 2 y^{^{'}} + y = 0, y (0) = - 1, y^{^{'}} (0) = - 2

c y^{- 3}

f (x) = ln (x + 5)

\frac{70}{x}

\int sin (30 x) d x

What is laplacetransform 3cos(t) ?
The answer to laplacetransform 3cos(t) is (3s)/(s^2+1)