Homework "LAPLACE TRANSFORM" 9. variant 1) Find the Laplace transform of the original a) f(t) =2cos6t-1-e²ªsin2t %3D b) f(t) = | ucoOs5udu 0. 2) Find the original of the Laplace transform eP a) F(p) = p+1' 1+ p p - 4 p+ 9 2- p (p+4)(p +1)’ b) F(p) = c) F(p) = 3) Solve the equation, and verify its solution. y' +8y + 52y= et У0) — 0, У(0)—4
Homework "LAPLACE TRANSFORM" 9. variant 1) Find the Laplace transform of the original a) f(t) =2cos6t-1-e²ªsin2t %3D b) f(t) = | ucoOs5udu 0. 2) Find the original of the Laplace transform eP a) F(p) = p+1' 1+ p p - 4 p+ 9 2- p (p+4)(p +1)’ b) F(p) = c) F(p) = 3) Solve the equation, and verify its solution. y' +8y + 52y= et У0) — 0, У(0)—4
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Transcribed Image Text:Homework "LAPLACE TRANSFORM"
9. variant
1) Find the Laplace transform of the original
a) f(t) =2cos6t-1-e²'sin2t
b) f(t) = [ ucos5udu
2) Find the original of the Laplace transform
a) F(p) =
P+1'
1+ p
p - 4p+9
2-p
(p+4)(p +1)’
b) F(p) =
c) F(p) =
3) Solve the equation, and verify its solution.
y'+8y+ 52y= e
У О) %3 0, у(0) - 4

Transcribed Image Text:Homework 1: "COMPLEX VARIABLES"
Variant 9.
1
1. Given two complex numbers z =-
i
and
Z =-27i.
a) Represent the numbers z and z, graphically in the complex plane;
b) Find the principle value of the argument and modulus of
and
c) Express the numbers z and z, intrigommetric and exponential fom;
18
d) Calculate z and
e) Calculate all values of the root /z, , and represent these values in the complex plane;
f) Represent geometrically points of the complex plane which satisfy the following inequalities:
1) Rezs Rez,
3) |z-z |<2,
2) Imz2 Imz,
4) 1<|z-z |5 2,
5) s arg z<P2,
where
P = min{arg z, arg z}, = max{arg z, arg z}.
%3D
2. Calculate the value of the following complex functions:
b) In(v2-vZi),
e) con-3).
a) e
4
3. Check out if the Cauchy-Riemann equations are satisfied for the given function. Calculate f(z)
if it exists.
f(z) = iz+e
4. Evaluate the complex line integral [(zlmz+3z) dz, where L is a straight lie connecting
the points z = 0 and z, =1+3i. Draw the line and show the direction of integration.
cosh(iz) dz
5. Using the Cauchy's integral fomula, evaluate the contour integral z.47-3'
where
Cisa closed contourgiven by the equation | z-2. Graph the contour and singular points.
9.
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