MCQ
The value of `int_1^3 dx/(x(1 + x^2))` is ______
- A`1/2log(9/4)`
- B`1/2log(4/9)`
- C`1/2log(5/9)`
- ✓`1/2log(9/5)`
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f(x) = `{((sin ("p" + 1)x + sin x)/x"," x < 0),(q "," x = 0),((sqrt(x + x^2) - sqrtx)/(x^(3//2))"," x > 0):}`
is continuous for all x in R, are
$\ce{CH3 - I ->[Alc. KCN][\Delta] A ->[Na/C2H5OH] B}$