6 public questions tagged with this topic.
Understanding this is easy: using formula we get point of inflexion at = 0. Calculation gives this directly, check steps: apply rule, substitute values, simplify to get point of inflexion at = 0.
Ref: NCERT Mathematics Class XI and XII
Applying the basic concept, after simplifying, 5 is left. The method is simple: formula → substitution → calculation → answer.
Ref: NCERT Mathematics Class XI and XII
In easy words, using formula we get 3. Calculation gives this directly, check steps: apply rule, substitute values, simplify to get 3.
Ref: NCERT Mathematics Class XI and XII
We can see that complete solution: write formula, plug data, do arithmetic. Final value matches 1. Simple and accurate.
Ref: NCERT Mathematics Class XII — Applications of Derivatives
We can see that we verify 62 by full calculation: use standard identity, substitute, simplify step by step to reach 62.
Ref: NCERT Mathematics Class XII — Applications of Derivatives
Recall the rule f'=3x²+2x+k. No extremum means f'=0 has no real root. Discriminant D=4-12k1/3. Complete.
Ref: NCERT Mathematics Class XII — Applications of Derivatives
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