Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
First-day Handout
Fall 2015
M 427J Differential Equations with Linear Algebra
Instructor:
Office Hours:
Text:
Class Time:
Discussion Time:
Dr. Bill Wolesensky, RLM 13.160, [email protected]
M
First-day Handout
Fall 2015
M 427J Differential Equations with Linear Algebra
Instructor:
Office Hours:
Text:
Class Time:
Discussion Time:
Dr. Bill Wolesensky, RLM 13.160, [email protected]
M
M427J Sample Exam 1
NO NOTES. NO CALCULATORS. I WONT TAKE QUESTIONS ABOUT THESE PROBLEMS.
1. Find the general solution of (y x3 ) dx + (x + y 3 ) dy = 0.
2. Find the general solution of y +
2t
cot t
y
Solutions to evens, Section 2.5
2. You need to consider two cases for . The rst case is when
y(t) = c1 e
where
A=
When
=
2
2t
+ c2 te
2t
6=
2: This gives
+ (At + B) e
1
; and B =
+4 +4
( + 2)(
2
t
2
:
Solutions to evens, Section 2.2.1
2.
y(t) = e
3
4t
4.
y(t) = e
1
8t
"
"
c1 cos
c1 cos
p
23
t
4
p
15
t
8
!
!
+ c2 sin
+ c2 sin
p
23
t
4
!#
p
!#
p
!#
15
t
8
6.
y(t) = e
8.
y(t) = e
1
4t
"
c1 cos
p
t
sin
Solutions to evens, Section 1.9
2.
My
= Nt
=) My Nt = 0
Z
=)
My Nt dy = k(t)
Z
=) M
Nt dy = k(t)
4.
h(t; y) = y + tety + t + C
6.
h(t; y) =
1 2 t
y e
2
ye2t = C
:
8.
t2 cos y + t3 y
12.
h(t; y) =
16.
Chapter 32The Reception and Transmission of Extracellular Information
MULTIPLE CHOICE
1. Hormones and other signal molecules bind with _ affinities to their receptors and are produced at
concentration
Chapter 30Protein Synthesis
MULTIPLE CHOICE
1. The adapter molecule that interacts specifically with both nucleic acids and amino acids is:
a. rRNA.
b. tRNA.
c. mRNA.
d. ssRNA.
e. all are true.
ANS: B
Chapter 31Completing the Protein Life Cycle: Folding, Processing, and Degradation
MULTIPLE CHOICE
1. The information for folding each protein into its unique three-dimensional architecture resides wit
Chapter 29Transcription and the Regulation of Gene Expression
MULTIPLE CHOICE
1. Both prokaryotes and differentiated eukaryotic cells express _ of their genes at any given time in
the process called _
Chapter 26The Synthesis and Degradation of Nucleotides
MULTIPLE CHOICE
1. All of the following statements about nucleotides are true EXCEPT:
a. They are produced by nearly all organisms.
b. The rate o
Chapter 25Nitrogen Acquisition and Amino Acid Metabolism
MULTIPLE CHOICE
1. What is nitrogen fixation?
a. The reduction of NO3 to NH4+.
b. The formation of NH4+ from N2 gas.
c. The oxidation of NH4+ t
Version 238/ADCDC Quiz 1 Lyon (52635) This print-out should have 8 questions. Multiple-choice questions may continue on the next column or page nd all choices before answering. There is only one try f