Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Mathematics
Mathematics
Problem
The number of points in
(
−
∞
,
∞
)
(-\infty, \infty)
(
−
∞
,
∞
)
, for which
x
2
−
x
sin
x
−
cos
x
=
0
x^2 - x\sin x - \cos x = 0
x
2
−
x
sin
x
−
cos
x
=
0
, is: (A) 6 (B) 4 (C) 2 (D) 0
Browse the problem library