The velocity of a particle is given by `v=12+3(t+7t^2)`. What is the acceleration of the particle?

Explanation

To find the acceleration of the particle given the velocity function \( v = 12 + 3(t + 7t^2) \), we need to differentiate the velocity function with respect to time \( t \).

### Step-by-Step Solution:

1. **Write down the velocity function**:
\[ v(t) = 12 + 3(t + 7t^2) \]
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