Sets

[neat bridge]

C: (-70, 15)
L: (-30, 10)

C ∩ L = (-30, 10)
C ∪ L = (-70, 15)
(C ∪ L)' = (-∞, -70] ∪ [15, ∞)
C ∩ L = (-30, 10)
C' ∪ L = (-∞, -70] ∪ (-30, 10)
C' ∩ L = (-30, -70]
C' = (-∞, -70] ∪ [15, ∞).
L' = (-∞, -30] ∪ [10, ∞).

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[neat bridge]

are these correct?

[mild blaze]

$C’\cap L$ has no solution

[topaz pollen]

;( | 追放された興奮

[mild blaze]

there is no intersection between these two sets

try to plot these on a number line to see it better

[neat bridge]

Thanks

[mild blaze]

👍

[neat bridge]

are the rest correct?

[mild blaze]

to double check i do recommend using a number line

as far as i can tell, yes

but i don’t have paper handy with me

so i may be wrong

[neat bridge]

thanks, do you know where I can find more questions like Q - R , NnZ, Q' - Q as well? @mild blaze

[ivory linden]

@neat bridge has given 1 rep to @mild blaze

[neat bridge]

I'm not sure how Q - R = Q'

[mild blaze]

idk

oh you mean $\bQ-\bR=\bQ'$

[topaz pollen]

;( | 追放された興奮

[neat bridge]

Yeah

[mild blaze]

uh

rational number minus real number

hmm

[neat bridge]

But if you were to use an example Q = 5, R = 5/10

5 - 5/10 = 4.5 which isn't irrational

[mild blaze]

nah i think they mean

$n\in\bR$ where $n\notin\bQ$

[topaz pollen]

;( | 追放された興奮

[mild blaze]

cause $\bQ\in\bR$ 💀

[topaz pollen]

;( | 追放された興奮

[neat bridge]

Lol, not sure why it results in an irrational number though if you subtract them. I just need more questions like this to practice

[gray birch]

@neat bridge

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[buoyant spindle]

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