Detail solution
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The derivative of a constant times a function is the constant times the derivative of the function.
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The derivative of sine is cosine:
So, the result is:
The answer is:
The first derivative
[src]
$$3 \cos{\left(t \right)}$$
The second derivative
[src]
$$- 3 \sin{\left(t \right)}$$
The third derivative
[src]
$$- 3 \cos{\left(t \right)}$$