Q18 If, show that f ''(x) exists for all real x and find it.
Given function is Now, differentiate in both the cases And In both, the cases f ''(x) exist Hence, we can say that f ''(x) exists for all real x and values are
CBSE Results 2024: Last 9 years’ CBSE Class 10, 12 result date and time; links to check score
CBSE Board exams twice a year from 2025, no plan for semesters: MoE
CBSE Class 12 board exams 2025 to have 50% competency-based questions; no change in 10th
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