A) 5\[I\] and \[I\]
B) 5\[I\] and 3\[I\]
C) 3\[I\]and\[I\]
D) 9 \[I\]and\[I\]
Correct Answer: D
Solution :
\[{{I}_{\max }}={{I}_{1}}+{{I}_{2}}+2\sqrt{{{I}_{1}}{{I}_{2}}}\] \[=I+4I+2\sqrt{I\times 4I}\] \[=5I+2\times 2I\] \[=5I+4I=9I\] \[{{I}_{\min }}=I+4I-2\sqrt{I\times 4I}\] \[=5I-4I=I\]
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