Differentiate w.r.t. d
1.05
Evaluate
\frac{21d}{20}
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\frac{\mathrm{d}}{\mathrm{d}d}(1.05d)
Combine d and 0.05d to get 1.05d.
1.05d^{1-1}
The derivative of ax^{n} is nax^{n-1}.
1.05d^{0}
Subtract 1 from 1.
1.05\times 1
For any term t except 0, t^{0}=1.
1.05
For any term t, t\times 1=t and 1t=t.
1.05d
Combine d and 0.05d to get 1.05d.
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