Let u(x) and v(x) be differentiable func...

Let `u(x) and v(x)` be differentiable functions such that `(u(x))/(v(x))= 7.` If (u'(x)/(v'(x))= p and ((u'(x))/(v'(x)))' = q,` then `(p+q)/(p-q)` has the value of to `(a) `1` (b) `0` (c) `7` (d) `-7`

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