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ধরি, f(x)=y=√(1-x) →f‌^-1(y)=x => y=√(1-x => y^2=1-x => x=1-y^2 => f^-1(y)=1-y^2 => f^-1(x)=1-x^2 (ans)

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দেওয়া অাছে, f(x) = root (1-x)

ধরি,  f(x) = root (1-x) = y

বা, y2 = 1-x

বা, x = 1-y2

এখানে, 

f(x) = y

বা, f-1(y) = x = 1-y2

বা, f-1(x) = 1-x2

অতএব, প্রদত্ত ফাংশনের বিপরীত ফাংশন = 1-x2


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