(A) y=log(sinx): y′′=−csc2x, IV.
(B) y=e1+logx=ex: y′′=0, III.
(C) y=log∣x∣: y′=1/x, y′′=−1/x2, I.
(D) y=x2+4x−1: y′′=2, II.
If the probability distribution of X is : | X | 2 | 3 | 4 | 5 | 6 | |---|---|---|---|---|---| | P(X) | 1/15 | 2/15 | 3/15 | 4/15 | 5/15 | Then…
CUET UG 2023 — Mathematics Applied-Mathematics
2023mcqmedium
If the probability distribution of X is :
| X | 2 | 3 | 4 | 5 | 6 |
|---|---|---|---|---|---|
| P(X) | 1/15 | 2/15 | 3/15 | 4/15 | 5/15 |
Then variance is equal to :
Official previous-year question
Held on 22 May 2023 · Verified 13 Jul 2026.
Options
- A
314
- B
914
- C
1114
- D
370
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