Q.14 Let f(x) = (ax + b) cosx + (cx + d) sinx andf'(x) = x cosx for all xer, then(a) a = -1(b) b=1(c) c= 1(d) d = -1

Let f(x) = (ax+b)/(cx + d), then f(x) has

If f(x) = (ax + b) Cos x +(cx +d) Sin x and f^(1) (x) = x Cosx is an an identity in x then a,b,c ,d are given by

Let f(x) = (ax+b)/(cx+d) . Then fof(x) = x , then

If f(x)=(ax + b)sinx+(cx +d)cos x , then the values of a b, c and d such that f"(x)=xcos x for all x, then (a + b + c + d)is

Find a, b, c, and d, where f(x)=(ax+b)cosx+(cx+d)sinxandf'(x)=xcosx is identity in x.

Find a, b, c, and d, where f(x)=(ax+b)cosx+(cx+d)sinxandf'(x)=xcosx is identity in x.

Find a, b, c, and d, where f(x)=(ax+b)cosx+(cx+d)sinxandf'(x)=xcosx is identity in x.

If f(x)=(ax+b)sin x+(cx+d)cos x, then the values of a b,c and d such that f(x)=x cos x for all x, then (a+b+c+d) is

If the function f(x)=(Ksinx+2cosx)/(sinx+cosx) is strictly increasing for all values of x , then (a) K (b) K >1 (c) K (d) K >2

If the function f(x)=(Ksinx+2cosx)/(sinx+cosx) is strictly increasing for all values of x , then (a) K (b) K >1 (c) K (d) K >2