Questions
Question 1
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State the derivative formula for an inverse function \(f^{-1}\).
Question 2
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If \(y=f^{-1}(x)\), what equation relates \(x\), \(y\), and \(f\)?
Question 3
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Use inverse differentiation to find \(d(\arcsin x)/dx\).
Question 4
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Use inverse differentiation to find \(d(\arctan x)/dx\).
Question 5
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Find \(d(\arccos x)/dx\).
Question 6
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For \(f(x)=x^3\), find \((f^{-1})'(8)\).
Question 7
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For \(f(x)=2x+5\), find \((f^{-1})'(x)\).
Question 8
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For \(f(x)=x^3+x\), find \((f^{-1})'(2)\).
Question 9
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Find \(d(\arcsin(2x))/dx\) and state the input restriction.
Question 10
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Find \(d(\arctan(x^2))/dx\).
Question 11
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For \(f(x)=e^x\), use the inverse derivative formula to find \(d(\ln x)/dx\).
Question 12
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For \(f(x)=x^5+2x\), find \((f^{-1})'(3)\).
Question 13
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Find \(d(\arccos(1-2x))/dx\).
Question 14
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For \(f(x)=x+\sin x\), find \((f^{-1})'(0)\).
Question 15
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Show that if \(f'(a)=0\), the inverse derivative formula cannot be used at \(x=f(a)\).
Question 16
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For \(f(x)=x^3\), explain why \((f^{-1})'(0)\) is not finite.
Question 17
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Find \(d(\ln(\arctan x))/dx\), stating a domain condition.
Question 18
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A student says \(d(\arcsin x)/dx=1/\cos x\). Explain the error.
Question 19
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For \(f(x)=x^3+x\), prove \((f^{-1})'(x)>0\) for every real \(x\).
Question 20
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Derive the inverse derivative formula from \(f(y)=x\).