✓ 2 MARKS
Definitions / Laws
🔥 APPEARED IN 3 BOARD SETS
Let $f : A \to B$ be defined by $f(x) = \frac{x - 2}{x - 3}$, where $A = \mathbb{R} - \{3\}$ and $B = \mathbb{R} - \{1\}$. Discuss the bijectivity of the function.
01 // VERIFIED BOARD OCCURRENCES
| Year | Paper Code | Set | Position |
|---|---|---|---|
| CBSE 2025 | Series 65-7 | Set 1 | Question 21 |
| CBSE 2025 | Series 65-7 | Set 2 | Question 23 |
| CBSE 2025 | Series 65-7 | Set 3 | Question 25 |
02 // OFFICIAL CBSE MARKING SCHEME BREAKDOWN
- Step 1: Stating the fundamental formula / law statement (+1 Mark)
- Step 2: Intermediate mathematical substitution or proof steps (+1 Mark)
- Step 3: Correct final value or conclusion with mandatory SI units (+1 Mark)