4. If K = { x €N| |x - 3| < 10 }, then K is infinite.5. Let T = { x ER | x² + 4 >0 }. Then, TCR.6. Let V = { x EZ | x* - 9x2 + 20 = 0 }. Then, |P (V)| = 16.7. Let U = { x ER| x <1 } and V = { x €R | |x| < 1 }. Then, U = V.8. Let C = { x ER| x = 4x } and D = { x ER | x³ = 1 }. Then, C = D.%3D%3D%3D%3D

Answered: Image /qna-images/answer/608e334b-f9d3-49f7-806c-d8bf2b30adf7.jpg

Answered: 4. If K = { x € N| |x- 3| < 10 }, then…

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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4. If K = { x € N| |x- 3| < 10 }, then K is infinite. 5. Let T = { x ER| x +4 >0}. Then, TC R. 6. Let V = { x € Z| x* – 9x² + 20 = 0 }. Then, IP (V)| = 16. %3D %3D