Differentiate w.r.t. b
-2
Evaluate
12.3-2b
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\frac{\mathrm{d}}{\mathrm{d}b}(12.3-2b)
Add 6.3 and 6 to get 12.3.
-2b^{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}.
-2b^{0}
Subtract 1 from 1.
-2
For any term t except 0, t^{0}=1.
12.3-2b
Add 6.3 and 6 to get 12.3.
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Simultaneous equation
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Limits
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