Maths Tricks You Must Know | Fastest Calculation Methods

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

Integer numbers 1️⃣8️⃣5️⃣⏳📝📚 #student #math #mathematics #studytok #foryou

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