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In the strip formula, the height y is given by:
Af of a
Bf of b
CZero
Df of x
Answer & Solution
Correct answer: D. f of x
1. The strip reaches from the axis up to the curve.
2. Its height is the value of the function there.
3. So y equals f of x.
_Source: NCERT Class 12 Mathematics Part II, Chapter 8, Application of Integrals._
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