Differentiate w.r.t. x_7
1
Evaluate
x_{7}
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\frac{\mathrm{d}}{\mathrm{d}x_{7}}(x_{7})
Cancel out 7 and 7.
x_{7}^{1-1}
The derivative of ax^{n} is nax^{n-1}.
x_{7}^{0}
Subtract 1 from 1.
1
For any term t except 0, t^{0}=1.
x_{7}
Cancel out 7 and 7.
Examples
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Simultaneous equation
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Limits
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