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Why range of square root function cannot be negative???
hi vikram
to understand this you have to have a good knowledge of function and it''s inverse
the square root function( √x ) is actually inverse function of x 2
for a function to be invertible the function has to be bijective
and x 2 is not bijective for whole of it''s domain - infinity to + infinity ( not onto )
so the domain has to be trimmed to 0 to + infinity [ 0 , infinity [
now when you inverse any function the domian becomes the range of the inverted function
so the range of √x is [0 , + infinity [
But square root x has two values x and - x so it should not be a fiction
Please answer
root x is a function and for no value of x there are two values
can u give one pls give that value range and domain both is [0, infinity[ and the function is one to one and onto
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