Seventh Homework Set Answers
13. First note dT
1
= dY
1
D
, so D = Log(dT
1
)/Log(dY
1
) = Log(.6)/Log(.7) ≈ 1.432.
Next, dT
2
= |dY
2
|
D
, so |dY
2
| = dT
2
1/D
≈ .4
1/1.432
≈ 0.527 and so dY
2
≈ -0.527
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Homework 7 Practice
.