Differentiate w.r.t. c
36c^{3}
Evaluate
9c^{4}
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\frac{\mathrm{d}}{\mathrm{d}c}(9c^{4})
Divide 675c^{4} by 75 to get 9c^{4}.
4\times 9c^{4-1}
The derivative of ax^{n} is nax^{n-1}.
36c^{4-1}
Multiply 4 times 9.
36c^{3}
Subtract 1 from 4.
9c^{4}
Divide 675c^{4} by 75 to get 9c^{4}.
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