Can anyone please answer this question...???
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f(x) = ln(x+√(x^2+1))
x = f^-1(ln(x+√(x^2+1))
f^-1(ln(x+√(x^2+1)) =x
ln(x+√(x^2+1)) = ln7
7=(x+√(x^2+1))
7-x = √(x^2+1)
squaring on both sides
x^2-14x +49 =x^2+1
-14x=48
x=-24/7
f^-1(ln(7)) = -24/7
x = f^-1(ln(x+√(x^2+1))
f^-1(ln(x+√(x^2+1)) =x
ln(x+√(x^2+1)) = ln7
7=(x+√(x^2+1))
7-x = √(x^2+1)
squaring on both sides
x^2-14x +49 =x^2+1
-14x=48
x=-24/7
f^-1(ln(7)) = -24/7
ck233:
hi
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