Q) Show that 𝑓:𝑅_+→[−5,∞) given by 𝑓(𝑥)=4𝑥^2+4𝑥−5 is both one-one and onto where 𝑅_+=[0,∞).

Learn Maths Symbols for Kids ➕➖✖️➗ | Easy Meanings & Uses with Examples

Q) Let A = R – {5} and B = R – {1}. Consider the function f: A → B, defined by f(x) = (𝑥−3)/

Dewalt vs Alloyman Laser Level Comparison