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वक्र x = f(y), y-अक्ष आणि दोन रेषा y = a आणि y = b ने बांधलेले क्षेत्रफळ समान आहे:

  4. वरीलपैकी काहीही नाही

Answer (Detailed Solution Below)

Option 3 :
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संकल्पना:

x = a आणि x = b मधील वक्र y = f(x ) अंतर्गत क्षेत्रफळ (A) दिलेले आहे,

A =

गणना:

येथे, वक्र x = f(y) आणि रेषा y = a आणि y = b

∴क्षेत्रफळ =

=

(∵ f(y) = x)

म्हणून, पर्याय (3) योग्य आहे.

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