A) \[x<3\]
B) \[x>3\]
C) \[7<x<8\]
D) \[5<x<6\]
Correct Answer: B
Solution :
Given, \[y=-{{x}^{2}}+6x-3\] \[\Rightarrow \] \[\frac{dy}{dx}=-2x+6=y'\] y is increasing, if \[y'>0\] \[\Rightarrow \] \[-2x+6>0\] \[\Rightarrow \] \[-2x>-6\] \[\Rightarrow \] \[2x>6\] \[\Rightarrow \] \[x>3\]You need to login to perform this action.
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