Class 12 Applications Of Derivatives · Mcq Single Correct1 Marksmonotonicity
Class 12 Maths · Applications Of Derivatives · Mcq Single Correct #13
For f(x)=x³+6x²+6, identify the maximal open intervals where f′(x)>0.
✅ Step-by-Step Solution
Final Answer: Option (A): (−∞,−4) and (0,∞)
- f′=3x(x+4), positive outside its roots −4 and 0.
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