A) \[{{f}_{1}}+{{f}_{2}}\]
B) \[-{{f}_{1}}+{{f}_{2}}\]
C) \[2{{f}_{1}}+{{f}_{2}}\]
D) \[-2{{f}_{1}}+{{f}_{2}}\]
Correct Answer: C
Solution :
\[d=2{{f}_{i}}+{{f}_{2}}\]You need to login to perform this action.
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