range of f(x) = sgn(x^2 + 1) is
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2
Answer:
1
Step-by-step explanation:
we know that square of a number is always positive....
Thus by adding 1 to it, it will still remain positive....
now,sgn of a positive number is always 1
Answered by
0
Step-by-step explanation:
x^2 + 1 > 0
Hence, f(x)=+1
- I hope it helps you
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