A) \[2g'(g-g')+2f'(f-f')=c-c'\]
B) \[g'(g-g')+f'(f-f')=c-c'\]
C) \[f(g-g')+g(f-f')=c-c'\]
D) None of these
Correct Answer: A
Solution :
Common chord \[{{S}_{1}}-{{S}_{2}}=0\] passes through the centre of\[{{S}_{2}}=0\].You need to login to perform this action.
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