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Find the inverse of the function f(x)=−4x2−8, x≤0.
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Find the inverse of the function f(x)=−4x2−8, x≤0.

User Bob Groeneveld
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\sqrt{ (x+8)/(-4) }

You get this by switching the f(x) and the x and then solving for the new f(x)
User Diego Polido Santana
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