Differentiate w.r.t. x_15
1
Evaluate
x_{15}-25
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\frac{\mathrm{d}}{\mathrm{d}x_{15}}(x_{15}-25)
Calculate 5 to the power of 2 and get 25.
x_{15}^{1-1}
The derivative of a polynomial is the sum of the derivatives of its terms. The derivative of a constant term is 0. The derivative of ax^{n} is nax^{n-1}.
x_{15}^{0}
Subtract 1 from 1.
1
For any term t except 0, t^{0}=1.
x_{15}-25
Calculate 5 to the power of 2 and get 25.
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