If \[{{e}^{f(x)}}=\frac{10+x}{10-x},\ x\in (-10,\ 10)\] and \[f(x)=kf\left( \frac{200x}{100+{{x}^{2}}} \right)\], then \[k=\] [EAMCET 2003]

If \[{{e}^{f(x)}}=\frac{10+x}{10-x},\ x\in (-10,\ 10)\] and \[f(x)=kf\

1.	If \[{{e}^{f(x)}}=\frac{10+x}{10-x},\ x\in (-10,\ 10)\] and \[f(x)=kf\left( \frac{200x}{100+{{x}^{2}}} \right)\], then \[k=\] [EAMCET 2003]
A.	0.5
B.	0.6
C.	0.7
D.	0.8
Answer» B. 0.6

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If \[{{e}^{f(x)}}=\frac{10+x}{10-x},\ x\in (-10,\ 10)\] and \[f(x)=kf\left( \frac{200x}{100+{{x}^{2}}} \right)\], then \[k=\] [EAMCET 2003]

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