solve-limits-for-functions-f-x-cos-sgn-1-x-f-x-sgn-cos-1-x-Can-someone-help-Thanks-

Question Number 197549 by dragan91 last updated on 21/Sep/23

s o l v e l i m i t s f o r f u n c t i o n s

f (x) = c o s (s g n (1 / x))

f (x) = s g n (c o s (1 / x))

C a n s o m e o n e h e l p

T h a n k s

Commented by MM42 last updated on 21/Sep/23

{l i m}_{x \to ?}

Commented by dragan91 last updated on 23/Sep/23

x a p r o a c h e s t o i n f i n i t y

Commented by MM42 last updated on 26/Sep/23

{l i m}_{x \to \infty} c o s (s g n (\frac{1}{x})) = c o s 1

{l i m}_{x \to \infty} s g n (c o s (\frac{1}{x})) = 1

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