A) (i) and (ii) are false.
B) (i) and (ii) are true.
C) (i) is true while (ii) is false.
D) (i) is false while (ii) is true.
Correct Answer: D
Solution :
(i) \[\frac{P+Q}{P-Q}\,=\frac{\frac{P}{Q}+1}{\frac{P}{Q}-1}\,=\frac{7+1}{7-1}\,=\frac{8}{6}=\frac{4}{3}\] (ii) \[P=\frac{(x-6)\,(x+6)}{(x-7)\,(x+7)},\,\,Q=\frac{x+6}{x-7}\] \[\frac{P}{Q}\,=\frac{(x-6)\,(x+6)}{(x-7)\,(x+7)}\times \frac{(x+7)}{(x+6)}\,=\frac{x-6}{x-7}\]You need to login to perform this action.
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