The signum function f:R R, defined by f(x)=cases-1, & x 0cases is: (Where R is set of real numbers) Option 1: One-one and onto Option 2: One-one but not onto Option 3: Onto but not one-one Option 4: Neither one-one nor onto

The answer is 'Neither one-one nor onto'. View full solution:

CUET Mathematics - The signum function f:R R, defined by f(x)=cases-1, & x<0\\0, & x=0\\1, & x>0cases is: (Where R is set of real numbers) | PYQs + Solutions

CUET Mathematics 2026 30th May Shift 1

Algebra

Easy

core

One-one and onto

One-one but not onto

Onto but not one-one

Neither one-one nor onto

✅ Correct Option: 4