If `lim_(xto0)(x^(-3)sin3x+ax^(-2)+b)` exists and is equal to zero the value of `a+2b` is………..

If lim_(x rarr0)(x^(-3)sin3x+ax^(-2)+b) exists and is equal to 0 then

If lim xto0(x^(-3)sin3x+a x^(-2)+b) exists and is equal to 0, then

If lim_(x->0) (x^(-3)sin3x+ax^(-2)+b) exists and is equal to 0 then

17lim8. If lim (x sin3x ax b) exists and is x-20 equal to zero,then the value of a+2b

If lim_(x to 0) (2a sin x-sin2x)/(tan^(3)x) exists and is equal to 1, then the value of a is

If lim_(xrarr0)(x^(-3)sin3x+a x^(-2)+b) exists and is equal to 0, then (a) a=-3 and b=9/2 (b) a=3 and b=9/2 (c) a=-3 and b=-9/2 (d) a=3 and b=-9/2

If lim_(xrarr0)(x^(-3)sin3x+a x^(-2)+b) exists and is equal to 0, then (a) a=-3 and b=9/2 (b) a=3 and b=9/2 (c) a=-3 and b=-9/2 (d) a=3 and b=-9/2

If lim_(xrarr0)(2a sin x-sin 2x)/(tan^(3)x) exists and is equal to 1, then the value of a is