✓ 2 MARKS
Derivations
🔥 APPEARED IN 3 BOARD SETS
(a) Find the absolute maximum value of $f(x) = \cos x + \sin^2 x$, $x \in [0, \pi]$
OR
(b) If the volume of a solid hemisphere increases at a uniform rate, prove that its surface area varies inversely as its radius.
01 // VERIFIED BOARD OCCURRENCES
| Year | Paper Code | Set | Position |
|---|---|---|---|
| CBSE 2026 | Series 65-2 | Set 1 | Question 23 |
| CBSE 2026 | Series 65-2 | Set 2 | Question 21 |
| CBSE 2026 | Series 65-2 | Set 3 | Question 24 |
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)