Solve the given simultaneous equation

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Homework Help Overview

The discussion revolves around solving a set of simultaneous equations involving square roots: ##\sqrt{x} + y = 7## and ##x + \sqrt{y} = 11##. Participants explore various methods and approaches to find solutions, including algebraic manipulation and numerical methods.

Discussion Character

  • Mixed

Approaches and Questions Raised

  • Participants discuss alternative approaches to solving the equations, including exploring quartic equations and numerical methods. Some question the necessity of algebraic solutions, while others suggest using trial and error or derivative methods to analyze polynomial roots.

Discussion Status

The discussion is ongoing, with participants sharing insights and hints about solving quartic equations. Some have offered guidance on potential methods, while others are still exploring their own approaches without reaching a consensus.

Contextual Notes

Participants note the complexity of quartic equations and the various methods available for solving them, including numerical approximations and polynomial division. There are also references to assumptions about the nature of roots in polynomials.

  • #31
Orodruin said:
Since both sets are aleph one, it is possible to construct a bijection between them.
I was thinking about that too. I recalled a problem in an real analysis book of mine which I did not read that long time ago which asked how many algebraic vs. trancendetal numbers (over the rationals) there are. If I remember correctly, there should be countable many (##\aleph_0##) algebraic numbers and uncountable (##\aleph_1##) trancendental numbers... I should revisit my notes at some points
 
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  • #32
Delta2 said:
Hmm, can we say that the probability a random polynomial to have only real roots is 50%? Hard though to imagine how we define this probability as if we try to define it as a fraction, both the numerator and the denominator are uncountable many...
I guess we'd have to choose a distribution to determine probabilities.
 
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  • #33
chwala said:
Homework Statement:: Solve for ##x## and ##y## given;
##\sqrt x+ y=7##
##x+\sqrt y=11##
Relevant Equations:: Simultaneous equations
Presuming this is a Diophantine (integer only) equation , we don't have too many choices:

1 + 6
2 + 5
3 + 4

One number has to be a perfect square. Exclude 2 + 5. If x=1, y=6 and that doesn't work either.
 
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