Differentiate w.r.t. z
128
Evaluate
128z
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\frac{\mathrm{d}}{\mathrm{d}z}(128z)
Multiply 8 and 16 to get 128.
128z^{1-1}
The derivative of ax^{n} is nax^{n-1}.
128z^{0}
Subtract 1 from 1.
128\times 1
For any term t except 0, t^{0}=1.
128
For any term t, t\times 1=t and 1t=t.
128z
Multiply 8 and 16 to get 128.
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