# Sec4.5:#31 : 11-38 – Exponential Equations (a) Find the exact solution of the exponential equation in terms of logarithms. (b) Use a calcu- lator to

Sec4.5:#31 : 11-38 – Exponential Equations (a) Find the exact solution of
the exponential equation in terms of logarithms. (b) Use a calcu-
lator to find an approximation to the solution rounded to six deci-
mal places.
11. 10*
25
12. 10-* = 4
13. е
-5x
10
14. e04x
8
15. 2′-* = 3
16. 32*-1 = 5
17. 3e*
10
18. 2e12r
17
19. 300(1.025)2r
12t
=
1000
20. 10(1.375)10r = 50
21. e’-4;
22. e3-5x
16
23. 25-7к
15
24. 23x
34
25. 3*/14
0.1
26. 5-x/100
= 2
27. 4(1 + 105*) = 9
28. 2(5 + 3*+!) = 100
29. 8 + e’-4x
20
30. 1 + e4r+1 = 20
31. 4* + 21+2r
50
32. 125* + 53x+1
200
1
33. 5* = 4*+
34. 10′-x
: 6*
35. 23x+1 = 3*-2
36. 7×/2
51-x
10
37.
1 + e¯*
4
38.
1 + e¯*
50

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