Differentiate w.r.t. H_1
20H_{1}
Evaluate
10H_{1}^{2}
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2\times 10H_{1}^{2-1}
The derivative of ax^{n} is nax^{n-1}.
20H_{1}^{2-1}
Multiply 2 times 10.
20H_{1}^{1}
Subtract 1 from 2.
20H_{1}
For any term t, t^{1}=t.
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Limits
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