### Get in groups and solve the system: xy = 2 2log x - log

```January 13, 2014
Precalc Warm Up # 4-1
Get in groups and solve the system:
xy = 2
2log 2 x - log y = 2
2
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Questions on #3-5?
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nd
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In Groups, solve the following. (give answers to 4 decimal
places) Be ready to present to class
1. 2 + 4⋄10x-3 = 58
2. 4-e-6x = 1
3.
January 13, 2014
In Groups, solve the following. (give answers to 4 decimal
places) Be ready to present to class
1. 2 + 4⋄10x-3 = 58
2. 4-e-6x = 1
3.
January 13, 2014
The previous problems were exponential equations. The
following are logarithmic equations. Try these in groups,
and be prepared to present:
4. logx+2(3x2+4x-14) = 2
5. log2(2x+1-8) = x
January 13, 2014
The previous problems were exponential equations. The
following are logarithmic equations. Try these in groups,
and be prepared to present:
4. logx+2(3x2+4x-14) = 2
5. log2(2x+1-8) = x
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6. lnx - ln(x+5) = 6
7. 2log(x+1)+logx=2
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6. lnx - ln(x+5) = 6
7. 2log(x+1)+logx=2
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How is this problem different from the ones we just
solved? Solve for x.
2 log(2x) - log4 = log(2x-1)
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Here's another one that gives some trouble:
(logx)2 - 11 logx + 10 = 0
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Along the same line,
e2x-4ex-5 = 0
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And perhaps the toughest of all,
22x+3-7·2x+1+5=0
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Go over the no grapher quiz from before break
#4-1p. 228 7LC, 9-16 LC on all
The Unit Test is coming this Friday. It covers:
4.1-4.5 in PC book
7.1.2, 7.1.3. , 7.1.4, 7.1.5,
```