A) \[{{x}_{1}}{{x}_{2}}\]
B) \[\sqrt{{{x}_{1}}{{x}_{2}}}\]
C) \[\sqrt{{{x}_{1}}/{{x}_{2}}}\]
D) \[\frac{{{x}_{1}}+{{x}_{2}}}{2}\]
Correct Answer: B
Solution :
According to Newton's formula \[{{f}_{1}}{{f}_{2}}={{x}_{1}}{{x}_{2}}.\] But \[{{f}_{1}}={{f}_{2}}=f\] \[\therefore \] \[{{f}^{2}}={{x}_{1}}{{x}_{2}}\] or \[f=\sqrt{{{x}_{1}}{{x}_{2}}}\]You need to login to perform this action.
You will be redirected in
3 sec