Interval Notation to Inequality Notation

Joined
Jun 27, 2021
Messages
5,386
Reaction score
422
Screenshot_20220524-220407_Samsung Notes.jpg


For 42, I got -2 < x < 2.

For 44, I got -3/2 <= x <= 1/2.

For 46, I got -4 < x <= 0.

For 48, I got x > sqrt{2}.

For 50, I got x => 0.

For 52, I got x <= -1

For 54, a capital bold letter R represents all real numbers.

You say?
 
42, 44, 46 correct

For 48, you got x > sqrt{2} which is incorrect
(sqrt(2), ∞) will be sqrt(2)< x < ∞

50. 0 < x < ∞
52. interval is ( - ∞, -2) so - ∞ < x< -2

54, a capital bold letter R represents all real numbers-> correct
you need to write it using
Inequality Notation :
- ∞ < x<
 
42, 44, 46 correct

For 48, you got x > sqrt{2} which is incorrect
(sqrt(2), ∞) will be sqrt(2)< x < ∞

50. 0 < x < ∞
52. interval is ( - ∞, -2) so - ∞ < x< -2

54, a capital bold letter R represents all real numbers-> correct
you need to write it using
Inequality Notation :
- ∞ < x<

Do you the importance of revisiting former topics?
We return to Calculus this weekend.
 

Members online

No members online now.

Forum statistics

Threads
2,521
Messages
9,844
Members
697
Latest member
RicoCullen
Back
Top