How do you find the domain and range of #f(x) = - sqrt ( 4x^2 + 2x^4 +5 )#?
range is all negative real numbers
under squareroot we can have a positive or zero number so
all the terms are positive because squared and summed
so it always is positive, for all x in R
because of squareroot produces a positive number and it is preceeded by negative sign, range is all negative real numbers