In: Math
Exercise 2 2.1. Write each expression as a single logarithm and, if possible, simplify. ln (x - 4) - ln (x+ 2); ln (x) - 3 [ln (x - 5) + ln (x + 5)] ; log x − 3log(x – 1) 2.2. Solve for x. ln(x – 1)= 1 ; e2x = 4 ; log3x + log3(x2 – 8) = log38x ; 4x2(2x) − 9(2x) = 0
(1)
(A)
we have
we can use property of log
..........Answer
(B)
we have
we can use property of log
we can use property of log
...........Answer
(C)
we can use property of log
n*log(a)=log(a^n)
we can use property of log
............Answer
(2)
(A)
we can take e on both sides
...........Answer
(B)
we can take ln on both sides
............Answer