Project ForgeEngineering Mathematics
Calculus
GATE 2007
Easy
The minimum value of function y = x² in the interval [1,5] is
- A0
- 1
- C25
- Dundefined
Explanation
y=x² is strictly increasing on [1,5] (dy/dx=2x>0 for x≥1), so the minimum occurs at the left endpoint x=1, giving y=1.
Source: GATE ME 2007 (2007)
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