✓ 1 MARKS
MCQ
🔥 APPEARED IN 3 BOARD SETS
The integrating factor of the differential equation $2x \frac{\mathrm{d}y}{\mathrm{d}x} - y = 3$ is
A
$\sqrt{x}$
B
$\frac{1}{\sqrt{x}}$
C
$e^x$
D
$e^{-x}$
01 // VERIFIED BOARD OCCURRENCES
| Year | Paper Code | Set | Position |
|---|---|---|---|
| CBSE 2026 | Series 65-2 | Set 1 | Question 12 |
| CBSE 2026 | Series 65-2 | Set 2 | Question 5 |
| CBSE 2026 | Series 65-2 | Set 3 | Question 16 |
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)