KCET 2018 Math Solved Paper

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Question : 48 of 60

Marks: +1, -0

If

f(x)={

√1+kx−√1−kx

x

;

if‌ −1≤x≤0

2x+1

x−1

;

if‌ ‌0≤x≤1

is continuous at x = 0, then the value of k is

k = 1
k = - 1
k = 0
k = 2

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