Maths Tricks You Must Know | Fastest Calculation Methods

Q) Show that a function 𝑓:𝑅_+→𝐴⊂𝑁, defined as 𝑓(𝑥)=4𝑥^2+12𝑥+15 is one-one. Find gset 𝐴

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

Most Satisfying Way to Learn Sum of n Odd Numbers I Visual Proof I Math Wali Class #numbersystem

Do you know these numbers? 🔢 Let's learn to count #forkids

🤯 Solve Square Root Questions in Seconds by Observation! Aptitude Booster Trick for SSC and RRB #yt

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

Class 9 Maths Hidden Secret 😱 | Star Questions Important or Not? | Ganita Manjari Update