Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN: 9780470458365
Author: Erwin Kreyszig
Publisher: Wiley, John & Sons, Incorporated
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Question
Real Analysis II Please find hint from board pic
Consider the system:
X1X3 + x2x² = 0
|x₁x³ + x² = 0
X1 and x2 near (1, 1, 1,-1)?
1. Can we solve for x3 and 4 as functions of
Can you use the Implicit Function Theorem to justify your answer?
Explain why.
2. Can we solve for 3 and 4 as functions of x₁ and x2 near (0, 0, 0, 0)?
Can you use the Implicit Function Theorem to justify your answer?
Explain why.
3. Solve for x3 and 4 in terms of ₁ and x2. These formulas may help to
understand whether or not we can solve for 3 and 4 as functions of
₁ and 2 near (C₁, C2, C3, C4).
expand button
Transcribed Image Text:Consider the system: X1X3 + x2x² = 0 |x₁x³ + x² = 0 X1 and x2 near (1, 1, 1,-1)? 1. Can we solve for x3 and 4 as functions of Can you use the Implicit Function Theorem to justify your answer? Explain why. 2. Can we solve for 3 and 4 as functions of x₁ and x2 near (0, 0, 0, 0)? Can you use the Implicit Function Theorem to justify your answer? Explain why. 3. Solve for x3 and 4 in terms of ₁ and x2. These formulas may help to understand whether or not we can solve for 3 and 4 as functions of ₁ and 2 near (C₁, C2, C3, C4).
ex Let F: IR→IR² where
F(X₁1X₁₁ X3 X 4) = (x
Can we solve [F(3)= 5 = (0,0) ER²
for
and
X3 and
X₂
Xy as tons of X₁
4
2
Imp. Fen. Thm. Let F:IR" - R"
F₂
X₁ X ₂ + x3 x4)
F = (F₁,F₂), F(c) =Ō = (0,0) for some
C = (²₁1²2, C3, C4) ER", and
Ə(F₁,F₂)
2(x3, x4)
Then 3
be c',
- (c) = det
93: N-IR and Øy: N→ IR S.t.
x3 = 3 (x₁₁x₂) + xy = $4(x₁1x₂)
solve F(X₁, X₂, X3, Xy) = (X₁, X₂) EN
Øz (13 (2)=C3 and $4((1162) = (4.
and
Let
So
3
#0.
c = (',!,!,-¹).
2 (F₁, F₂).
2 [x3, x4)
~X₂ X3 = -10.
=
JF₂
2x1
det
JF, 26
Эхз даху
✓
since
Also F is CDF is the
DF=
- X₂
Ху
CaF₂
[D3 F₁(x) D₂ F₁(x)]
[Dz F₂ (x) ; D 4 F₂(x)]
So by IFT, we can solve for xz + xy
a nhood N of (C₁, 5₂) and C' fons as fons. of x₁ * x₂ on some nhood N
F(X₁, X₁, X₂, Xu) = (0,0)
get X z = 2 / ² = Øy (X₁Xx₂).
of (²₁₂₂): (1.1) s.t.
Set F₁ = x₁-x₂x3 =
3
Set F₂=X,X₂+X3 Xy=
Ø₂(x+, *2) $4 (X, 5X2) get X4=;
=
F(x, X₂, 3, 4) = 0
[1])
і Xyl X3
Also F(c)= F(1, 1, 1, -1) = (0, 0)
2 F₂
аху
2x3
the 2xy matrix
expand button
Transcribed Image Text:ex Let F: IR→IR² where F(X₁1X₁₁ X3 X 4) = (x Can we solve [F(3)= 5 = (0,0) ER² for and X3 and X₂ Xy as tons of X₁ 4 2 Imp. Fen. Thm. Let F:IR" - R" F₂ X₁ X ₂ + x3 x4) F = (F₁,F₂), F(c) =Ō = (0,0) for some C = (²₁1²2, C3, C4) ER", and Ə(F₁,F₂) 2(x3, x4) Then 3 be c', - (c) = det 93: N-IR and Øy: N→ IR S.t. x3 = 3 (x₁₁x₂) + xy = $4(x₁1x₂) solve F(X₁, X₂, X3, Xy) = (X₁, X₂) EN Øz (13 (2)=C3 and $4((1162) = (4. and Let So 3 #0. c = (',!,!,-¹). 2 (F₁, F₂). 2 [x3, x4) ~X₂ X3 = -10. = JF₂ 2x1 det JF, 26 Эхз даху ✓ since Also F is CDF is the DF= - X₂ Ху CaF₂ [D3 F₁(x) D₂ F₁(x)] [Dz F₂ (x) ; D 4 F₂(x)] So by IFT, we can solve for xz + xy a nhood N of (C₁, 5₂) and C' fons as fons. of x₁ * x₂ on some nhood N F(X₁, X₁, X₂, Xu) = (0,0) get X z = 2 / ² = Øy (X₁Xx₂). of (²₁₂₂): (1.1) s.t. Set F₁ = x₁-x₂x3 = 3 Set F₂=X,X₂+X3 Xy= Ø₂(x+, *2) $4 (X, 5X2) get X4=; = F(x, X₂, 3, 4) = 0 [1]) і Xyl X3 Also F(c)= F(1, 1, 1, -1) = (0, 0) 2 F₂ аху 2x3 the 2xy matrix
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