Show that the following functions are continuous at every real x :
cos x

Show that the following functions are continuous at every real x : k (a constant )

Show that the following functions are continuous at every real x : 2x+5

Show that the following functions are continuous at every real x : x^(2)+sinx

Show that the following functions are continuous at every real x : 3x^(2)-5x+9

Show that the following functions are continuous at every real x:(i)k( constant )(ii)2x+5

Show that the following functions are continuous: f(x) = |cosx|

Prove that the following functions are continuous: |cos x|

Show that the following functions are continuous at x = 0 : f(x)={{:(x"cos"1/x" when "xne0),(0" when "x=0):}

Show that the following function are continuous at x=0: f(x) = |x|cos(1/x) for x ne0 f(0) = 0

Show that the following functions are continuous: f(x) = cos(x^2)