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-- Mathematics - Section B1
Relations and Functions
If $f(x)=x^3+3x^2+10x+2\sin x$, then range of the function is
(0, 2)
(− ∞, ∞)
(− ∞, 0)
(0, ∞)
$f(x) = x^3 + 3x^2 +10x + 2\sin x ; −∞ < x^3 + 3x^2 +10x < ∞$ as a cubic polynomial.
So, $−∞ < x^3 + 3x^2 +10x + 2\sin x < ∞$