Mathematics · Calculus
वह खुला अंतराल (open interval) कौन सा है जिसमें फलन f(x) = 2x3 + 9x2 + 12x - 1 निरंतर ह्रासमान (strictly decreasing) है?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
Share:
- 1[-1, 1]
- 2(-∞, -2)
- 3(-2, -1)✓
- 4(-1, ∞)
सही उत्तर देखें
(-2, -1)
Download Single Question PDF
Save this question and verified answer as a clean study sheet with live clickable link.
👥
Share with Friends & Study Groups
Challenge your peer aspirants on WhatsApp or Telegram to solve this question!
Online Test Series
Preparing for Mathematics?
Practice full-length Mathematics mock tests with real exam timers, instant score analysis, and all-India ranking.
Chapter Practice
Practice Calculus MCQs →Want more practice questions on Calculus?
Solve complete topic-wise tests with detailed solutions on GkGet.
Related Practice Questions
Recommended practice questions in Mathematics · Calculus