Home
Class 12
MATHS
The number of points in (-oo,oo), for wh...

The number of points in `(-oo,oo)`, for which `x^(2)-xsinx-cosx=0` is

A

6

B

4

C

2

D

0

Text Solution

Verified by Experts

Promotional Banner

Similar Questions

Explore conceptually related problems

The number of points of intersection of two curves y=2sinxa n dy=5x^2+2x+3i s a. 0 b. 1 c. 2 d. oo

The least natural number a for which x+a x^(-2)>2AAx in (0,oo) is 1 (b) 2 (c) 5 (d) none of these

The set of all real numbers x for which x^2-|x+2|+x >0 is (-oo,-2) b. (-oo,-sqrt(2))uu(sqrt(2),oo) c. (-oo,-1)uu(1,oo) d. (sqrt(2),oo)

The least natural number a for which x+ax^(-2)gt2 ,AAx in (0,oo) is -

(i) The function f(x)=x^(3) is decreasing in (-oo, oo) (ii) The function f(x)=x^(4) is increasing in (-oo, 0) , then-

Let f be the function f(x)=cosx-(1-(x^2)/2)dot Then (a) f(x) is an increasing function in (0,oo) (b) f(x) is a decreasing function in (-oo,oo) (c) f(x) is an increasing function in (-oo,oo) (d) f(x) is a decreasing function in (-oo,0)

Let A (0,2),B and C be points on parabola y^(2)+x +4 such that /_CBA (pi)/(2) . Then the range of ordinate of C is (a) (-oo,0)uu (4,oo) (b) (-oo,0] uu[4,oo) (c) [0,4] (d) (-oo,0)uu [4,oo)

Th range of k for which the inequaliity kcos^2x-kcosx+1>=0 AA x in(-oo,oo) is

The range of a for which the equation x^2+ax-4=0 has its smaller root in the interval (-1,2)i s a. (-oo,-3) b. (0,3) c. (0,oo) d. (-oo,-3)uu(0,oo)

Let f(x) be continuous in (-oo, oo) and f'(x) exists in (-oo, oo) . If f(3)=-6 and f'(x) ge 6 for all x in [3,6] then -