🔥 Number System Divisibility Trick | Find Missing Digits in Seconds | Lakshmi Mam Best Shortcut #yt

Q) Consider the quadratic equation (n^2−2n+2) x^2−3x+(n^2−2n+2)^2=0, n∈R. Let 𝛼 be the minimum

Q) Show that a function f: R → R defined by f(x) = 2𝑥/(1+𝑥^2 ) is neither one-one nor onto.

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Q) Check whether :Z×Z→Z×Z (where Z is the set of integers) defined as f(𝑥,y)=(2y,3𝑥) is injective

Q) Show that the function 𝑓:𝑅→𝑅 defined by 𝑓(𝑥)=4𝑥^3−5,∀𝑥∈𝑅 is one-one and onto