A) \[0<a<5\]
B) \[-5<a<5\]
C) \[0<a<10\]
D) \[0\le a<10\]
E) \[-10<a<10\]
Correct Answer: C
Solution :
\[\because \]\[|r|<1\] \[\Rightarrow \] \[-1<r<1\] Also, \[a=5(1-r)\] \[\Rightarrow \]\[0<a<10\] \[\left( \begin{align} & \because at\,r=-1,\,a=10 \\ & and\,at\,r=1,\,a=0 \\ \end{align} \right)\]You need to login to perform this action.
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