/sci/ - Science & Math » Thread #11119442

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Anonymous Tue 05 Nov 15:37:27 2019 No.11119442 View Reply Original Report

Quoted By: >>11119453 >>11119454

so i took a long break from anysort of math but now i'm finally starting college, pls explain to my dumb ass wtf is wrong in here

Anonymous

Anonymous Tue 05 Nov 2019 15:44:14 No.11119453 Report

Quoted By:

>>11119442
Dividing by a fraction is the same as multiplying by the reciprocal. The 4 goes in the numerator.

Anonymous

Anonymous Tue 05 Nov 2019 15:44:26 No.11119454 Report

Quoted By: >>11119472

>>11119442
Step 3 to step 4 doesnt make any sense

Anonymous

Anonymous Tue 05 Nov 2019 15:58:47 No.11119472 Report

Quoted By: >>11119479

>>11119454
I've rewritten 4 as a 4/1 fraction wich is technically corect; after that I've devided the 2 fractions by multiplying the first with the second one upside down (don't know the exact mathematical terminology in english)

Anonymous

Anonymous Tue 05 Nov 2019 16:01:31 No.11119479 Report

Quoted By: >>11119513

>>11119472
1/(1/(4/1)) =/= 1/4

Anonymous

Anonymous Tue 05 Nov 2019 16:21:43 No.11119513 Report

Quoted By:

>>11119479
thanks senpai, got it in the end division unlike multiplication is not comutative and you can not break thouse parantheses that the fraction lines represent from outside

Anonymous

Anonymous Tue 05 Nov 2019 16:32:27 No.11119534 Report

Quoted By:

$<br />\frac{4pl\pi}{cl^{2}}<br />$

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