## Question

###### Find all critical values of the finction f(r) = 2r'-9r' 601 .Lctf()-V A student determines that for some reale numbera, f (a) - -1. Explain why this sudcnl Iasoning must bc fulty:

Find all critical values of the finction f(r) = 2r'-9r' 601 . Lctf()-V A student determines that for some reale numbera, f (a) - -1. Explain why this sudcnl Iasoning must bc fulty:

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