A) \[[f\,(+1),\,\,f\,(-1)]\]
B) \[[f\,(-1),\,\,f\,(3)]\]
C) \[[-8,\,\,16]\]
D) \[[-8,\,\,72]\]
Correct Answer: D
Solution :
Image of the interval \[[-1,\,\,3]\]under the mapping \[f\,(x)\] \[\Rightarrow \] \[{{[f\,(x)]}_{\max '}}\,f\,{{(x)}_{[min]}}\] in \[[-1,\,\,3]\] \[f'\,(x)=0\]\[\Rightarrow \] \[x=\pm \,\,1\,\,;\,\,f\,(-1)\,\,;\,\,f\,(1)\] & \[f\,(3)\] And interpret the result
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