CBSE Class 12 Sample Paper for 2023 Boards

Practice Questions CBSE - Maths Class 12 (2023 Boards) →
Maths Class 12
Solutions of Sample Papers and Past Year Papers - for Class 12 Boards

Question 5 - CBSE Class 12 Sample Paper for 2023 Boards - Solutions of Sample Papers and Past Year Papers - for Class 12 Boards

Last updated at August 12, 2026 by

If ๐‘“โ€™(x) = ๐‘ฅ + 1/x , then ๐‘“(๐‘ฅ) is

ย 

(a) x 2 + log |๐‘ฅ| + ๐ถย ย ย ย ย ย ย ย ย ย ย ย ย ย ย ย ย ย ย ย ย ย ย ย ย ย ย ย ย 

(b) x 2 /2+ log |๐‘ฅ| + ๐ถย ย ย ย ย ย 

(c) x/2 + log |๐‘ฅ| + ๐ถย  ย  ย  ย  ย  ย  ย  ย  ย  ย  ย  ย  ย  ย  ย 

(d) x/2 โˆ’ log |๐‘ฅ| + ๐ถ

ย 

[MCQ Class 12] If ๐‘“'(๐‘ฅ) = ๐‘ฅ + 1/๐‘ฅ , then ๐‘“(๐‘ฅ) is (a) x^2 + log - CBSE Class 12 Sample Paper for 2023 Boards

ย 

Remove Ads
Teachoo ยท Class 12 Explore Class 12

Transcript

Question 5 If ๐‘“โ€™(๐‘ฅ) = ๐‘ฅ + 1/๐‘ฅ , then ๐‘“(๐‘ฅ) is (a) ๐‘ฅ^2 + log |๐‘ฅ| + ๐ถ (b) ๐‘ฅ^2/2+ log |๐‘ฅ| + ๐ถ (c) ๐‘ฅ/2 + log |๐‘ฅ| + ๐ถ (d) ๐‘ฅ/2 โˆ’ log |๐‘ฅ| + ๐ถNow, ๐‘“(๐‘ฅ) = โˆซ1โ–’ใ€–๐’‡^โ€ฒ (๐’™)๐’…๐’™ใ€— = โˆซ1โ–’(๐‘ฅ+1/๐‘ฅ)๐‘‘๐‘ฅ = โˆซ1โ–’ใ€–๐‘ฅ ๐‘‘๐‘ฅใ€—+โˆซ1โ–’ใ€–1/๐‘ฅ ๐‘‘๐‘ฅใ€— = ๐’™^๐Ÿ/๐Ÿ+๐’๐’๐’ˆโกใ€–|๐’™|ใ€—+๐‘ช So, the correct answer is (b)

Davneet Singh's photo - Co-founder, Teachoo

Made by

Davneet Singh

Davneet Singh is an IIT Kanpur graduate and has been teaching for 16+ years. At Teachoo, he breaks down Maths, Science and Computer Science into simple steps so students understand concepts deeply and score with confidence.

Many students prefer Teachoo Black for a smooth, ad-free learning experience.