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Question 1199089: Which of the following functions has domain (infinity, plus infinity) and range (-1,1)?
One of the following is the correct answer. Which one is correct?
A) f(x)=sinx
B) f(x)=arcsinx
C) f(x)=tanx
D) f(x)=arctanx
Answer by ikleyn(52867)   (Show Source):
You can put this solution on YOUR website! .
Which of the following functions has domain (infinity, plus infinity) and range (-1,1)?
One of the following is the correct answer. Which one is correct?
A) f(x)=sinx
B) f(x)=arcsinx
C) f(x)=tanx
D) f(x)=arctanx
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The correct answer is " NO ONE ".
The expected answer would be A), but the range is printed INCORRECTLY in this option.
The correct range for A) should be [-1,1], using straight brackets.
I just answered this question in the same way at this forum one or two months ago,
but those who work with these posts, are extremely inattentive.
Or do not understand what they are doing at this forum.
Or BOTH.
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Also, the domain is worded/printed incorrectly in your post.
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