Differentiate w.r.t. θ_9
36
Evaluate
36\theta _{9}
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\frac{\mathrm{d}}{\mathrm{d}\theta _{9}}(36\theta _{9})
Multiply 12 and 3 to get 36.
36\theta _{9}^{1-1}
The derivative of ax^{n} is nax^{n-1}.
36\theta _{9}^{0}
Subtract 1 from 1.
36\times 1
For any term t except 0, t^{0}=1.
36
For any term t, t\times 1=t and 1t=t.
36\theta _{9}
Multiply 12 and 3 to get 36.
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