1: For a function f(x,y) and f, is equal =0 and fy >0 at a point ( Xo, yo) then: A: ( Xo. Yo) is increasing point when x is vary and y is hold B: ( Xo. Yo) is increasing point when y is vary and x is hold C: (Xo, Yo) is decreasing point when x is vary and y is hold D: None of the above. 2: If C is the line segment from (2, 2) to (-2,-2) then r (t)is equal to: A: (-t,t +2) B:(-t,t-2) D: None of the above.

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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Q1: Choose then write the correct answer from the given options:
1: For a function f(x,y) and f is equal = 0 and fy >0 at a point ( Xo, yo) then:
A: ( Xo, Yo) is increasing point when x is vary and y is hold
B: ( Xp, Yo) is increasing point when y is vary and x is hold
C: (Xo, Yo) is decreasing point when x is vary and y is hold
D: None of the above.
2: If C is the line segment from (2, 2) to (-2,-2) then r (t)is equal to:
A: (-t,t + 2)
B: (- t,t - 2)
D: None of the above.
3: If n= -4 and n=2 for L.V.P ay"+ by' + cy = 0 then the general solution y and the
differential equation are:
A: y = A e2x + Bex
y + 4y' + 8y 0
B: y = A e2x + Be Ax, y+2y-8y 0
C: y = A e2* + Be **, y +2y' - 8y = 0
D: None of the above.
Siny'x
Inxy
will be:
dx
4: If f(x y) =
then
cos y'x
xy(Inxy)
y" cos y'x
* (Inxy)
cos y'x
A:
B:
D: None of the above.
y(lnxy)
Transcribed Image Text:Q1: Choose then write the correct answer from the given options: 1: For a function f(x,y) and f is equal = 0 and fy >0 at a point ( Xo, yo) then: A: ( Xo, Yo) is increasing point when x is vary and y is hold B: ( Xp, Yo) is increasing point when y is vary and x is hold C: (Xo, Yo) is decreasing point when x is vary and y is hold D: None of the above. 2: If C is the line segment from (2, 2) to (-2,-2) then r (t)is equal to: A: (-t,t + 2) B: (- t,t - 2) D: None of the above. 3: If n= -4 and n=2 for L.V.P ay"+ by' + cy = 0 then the general solution y and the differential equation are: A: y = A e2x + Bex y + 4y' + 8y 0 B: y = A e2x + Be Ax, y+2y-8y 0 C: y = A e2* + Be **, y +2y' - 8y = 0 D: None of the above. Siny'x Inxy will be: dx 4: If f(x y) = then cos y'x xy(Inxy) y" cos y'x * (Inxy) cos y'x A: B: D: None of the above. y(lnxy)
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