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Math help please?

0 votes
Solve this equation for x: ln (x + 1) - ln x = 2
asked Jul 22, 2014 in ALGEBRA 2 by anonymous

1 Answer

0 votes

The equation is ln(x + 1) - ln x = 2.

Apply quotient property logarithm: image

ln[(x + 1)/x] = 2

Apply basic principle of logarithm : logex = y ⇔ x = ey .

(x + 1)/x = e2

(x + 1)/x = 7.389

x + 1 = 7.389x

1 = 7.389x - x

1 = x(7.389 - 1)

x(6.389) = 1

x = 1/6.389

⇒ x = 0.1565.

The solution is x = 0.1565.

answered Jul 22, 2014 by lilly Expert

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