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datanewb Group TitleBest ResponseYou've already chosen the best response.0
A realvalued function f is one whose codomain is the set of real numbers or a subset thereof. This includes integers, fractions, irrational numbers, and transcendental numbers Sometime this symbol is used to denote the real numbers. \[\mathbb{R} \] This does not include complex numbers, numbers consisting of a real and imaginary part. So, \[ y = sin(x), y \in \mathbb{R}\] but, \[y = isin(x), y \in \mathbb{C}\]
 one year ago

akash_809 Group TitleBest ResponseYou've already chosen the best response.0
put it simply that range of real valued function is only real numbers, and not complex i.e y=x^2+x+1 ....is not a real valued function ,
 one year ago

pasta Group TitleBest ResponseYou've already chosen the best response.0
but this equation gives real numbers always .could you just GIVE A CASE WHERE THE EQUATION DOES NOT GIVE A REAL NUMBER IF I WAS TO SUBSTITUTE FOR ANY VALUE FROM THE NUMBER LINE
 one year ago
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