যদি হয়, তাহলে এর মান কত?
Created: 2 years ago |
Updated: 5 months ago
best des
-1/3
f(x) = ln(x)/3
f^(-1)(x) = 3^x
f^(-1)(3) = 3^3 = 27
f(f^(-1)(x)) = x
f(3) = f(f^(-1)(3))
f(3) = 27
f^(-1)(f(x)) = x
f^(-1)(f(3)) = 3
f^(-1)(27) = 3
f^(-1)'(x) = 3^(-x)/3
f^(-1)'(3) = 3^(-3)/3
= 1/27
= -1/3
উত্তর: f^(-1)'(3) = -1/3
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