Xy - X. y X*5 lay substitution x ky algebra why 8970? a IS by algebre to? qa are botth integers and the since '^ P, b, e and b e integers are closed under

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter10: Sequences, Series, And Probability
Section: Chapter Questions
Problem 63RE
icon
Related questions
Question
Can you help prove qa is not equal 0 before I can x is rational.
9:47 4
(3. het S be the statemout:
The product of
irrational mumber and
any
rational number
any
non zero
is icrational.
a) write a
negetion for S:
There exists an irrational munber nd a
rational mumber
non 7ere
ratonal.
whose productis
b) Prove S bu contraction :
Suppose not
and
Then there exists an irrational x
rational number
y such that
스
non zero
the pnduct of x.u is vatunal. Then Let
and
with
for some integers a,b, P and
ky detinitian of rational.
Xy - X. y
- X. * ay substitution
b
- x ky algebra
IS
a
why
Pb.
by algebre
Now pb and qa
are both integers A P,b, q and
and the
Since,
are integers bese integers are closed undr
products.
X is ratlanal which contradict
* is irratiomal .There fore
the fact that
the a ssumption
was wrony
and
X is irrational.
Transcribed Image Text:9:47 4 (3. het S be the statemout: The product of irrational mumber and any rational number any non zero is icrational. a) write a negetion for S: There exists an irrational munber nd a rational mumber non 7ere ratonal. whose productis b) Prove S bu contraction : Suppose not and Then there exists an irrational x rational number y such that 스 non zero the pnduct of x.u is vatunal. Then Let and with for some integers a,b, P and ky detinitian of rational. Xy - X. y - X. * ay substitution b - x ky algebra IS a why Pb. by algebre Now pb and qa are both integers A P,b, q and and the Since, are integers bese integers are closed undr products. X is ratlanal which contradict * is irratiomal .There fore the fact that the a ssumption was wrony and X is irrational.
Expert Solution
steps

Step by step

Solved in 2 steps with 1 images

Blurred answer
Recommended textbooks for you
Algebra & Trigonometry with Analytic Geometry
Algebra & Trigonometry with Analytic Geometry
Algebra
ISBN:
9781133382119
Author:
Swokowski
Publisher:
Cengage
Linear Algebra: A Modern Introduction
Linear Algebra: A Modern Introduction
Algebra
ISBN:
9781285463247
Author:
David Poole
Publisher:
Cengage Learning
Elementary Geometry For College Students, 7e
Elementary Geometry For College Students, 7e
Geometry
ISBN:
9781337614085
Author:
Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:
Cengage,
Elements Of Modern Algebra
Elements Of Modern Algebra
Algebra
ISBN:
9781285463230
Author:
Gilbert, Linda, Jimmie
Publisher:
Cengage Learning,