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Functions

Greatest Integer Function PYQ | JEE Main 2025 | Graph-Based Question

❓ Question Let y = [ x ] y=[x] be the Greatest Integer Function (GIF), and y = { x } y=\{x\} be the Fractional Part Function. The graph of y = …

Functions & Logarithms PYQ | JEE Main 2025 | Smart Identity Trick

❓ Question Given f ( x ) = log ⁡ ( 1 + x 1 − x ) , f(x)=\log\left(\frac{1+x}{1-x}\right), find f ( 3 x + x 3 1 + 3 x 2 ) . f\left(\frac{3x+x^3}{…

Modulus Function PYQ | JEE Main 2025 | Fastest Shortcut

❓ Question If f ( x ) = x 2 + 2 x + 1 − x 2 − 2 x + 1 , f(x)=\sqrt{x^2+2x+1}-\sqrt{x^2-2x+1}, find f  ⁣ ( − 5 4 ) + f  ⁣ ( 3 4 ) + f  ⁣ ( 7 4 ) …

Polynomial Function Identification Trick

❓ Concept Question If a polynomial function is given in transformed form like: f ( x 2 + 1 ) f(x^2+1) then how can we identify f ( x ) f(x)  quic…

Integral Calculus Function Transformation Trick

❓ Question Let f ( x ) f(x)  be a polynomial function such that: f ( x 2 + 1 ) = x 4 + 5 x 2 + 3 f(x^2+1)=x^4+5x^2+3 then: ∫ 0 3 f ( x )   d x \…

Composite Functions Concept for JEE Maths

❓ Concept Question How do we solve composite function problems using comparison method? πŸ–Ό Concept Image ✍️ Short Concept This concept is ba…

Find fogx Using Functional Equation Trick

❓ Question If g ( x ) = 3 x 2 + 2 x − 3 g(x)=3x^2+2x-3 f ( 0 ) = − 3 f(0)=-3 and 4 g ( f ( x ) ) = 3 x 2 − 32 x + 72 4g(f(x))=3x^2-32x+72 then …