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Fix derivative of sqrt(x)

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Aurélien Geron 2020-04-20 14:50:27 +12:00
parent 3fe4b8d4f8
commit ab97bf435b
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math_differential_calculus.ipynb
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@ -1453,7 +1453,7 @@
"Note that the power rule works for any $r \\neq 0$, including negative numbers and real numbers. For example:\n", "Note that the power rule works for any $r \\neq 0$, including negative numbers and real numbers. For example:\n",
"\n", "\n",
"* if $f(x) = \\dfrac{1}{x} = x^{-1}$, then $f'(x)=-x^{-2}=-\\dfrac{1}{x^2}$.\n", "* if $f(x) = \\dfrac{1}{x} = x^{-1}$, then $f'(x)=-x^{-2}=-\\dfrac{1}{x^2}$.\n",
"* if $f(x) = \\sqrt(x) = x^{1/2}$, then $f'(x)=\\dfrac{1}{2}x^{-1/2}=-\\dfrac{1}{\\sqrt{x}}$" "* if $f(x) = \\sqrt(x) = x^{1/2}$, then $f'(x)=\\dfrac{1}{2}x^{-1/2}=\\dfrac{1}{2\\sqrt{x}}$"
] ]
}, },
{ {