The parametric equations in these exercises represent a quadric surface for positive values of a , b , and c. Identify the type of surface by eliminating the parameters u and v . Check your conclusion by choosing specific values for the constants and generating the surface with a graphing utility. x = a cos u cos v , y = b sin u cos v , z = c sin v
The parametric equations in these exercises represent a quadric surface for positive values of a , b , and c. Identify the type of surface by eliminating the parameters u and v . Check your conclusion by choosing specific values for the constants and generating the surface with a graphing utility. x = a cos u cos v , y = b sin u cos v , z = c sin v
The parametric equations in these exercises represent a quadric surface for positive values of a, b, and c. Identify the type of surface by eliminating the parameters u and v. Check your conclusion by choosing specific values for the constants and generating the surface with a graphing utility.
x
=
a
cos
u
cos
v
,
y
=
b
sin
u
cos
v
,
z
=
c
sin
v
Inverse laplace transform
Lect: Huda I
H.w
1- F(S)=
A- Find - F(s) of the following
S
(s+1)5
1
2- F(s)
s² (s-a)
5+5
3- F(s)=
s2+4s+3
1
4- F(s)=
(s+2)2(s-2)
3s2-7s+5
5- F(s)=
(s-1)(s2-5s+6)
Inverse laplace transform
Lect :Huda I
H.w
A- Find L-1 F(s) of the following
1- F(S)=
2- F(s)-
S
(+1)5
s² (s-a)
5+5
s2+4s+3
3- F(s)-
1
4- F(s)-
(s+2)2(s-2)
3s2-7s+5
5- F(s)-
(s-1)(s2-55+6)
B-Solve the D.E of the following:
1- y'+3y+2fy dt = f(t) for y(0)-1 if f(t) is the function
whose graph is shown below
2
1 2
2-y+4y-u(t)
for y(0)=y'(0)=0
3- y"+4y'+13y= e−2t sin3t
for y(0)-1 and y'(0)=-2
17
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