Zasadniczo to wzór z fizyki, ale to podstawy matmy - przy czym wyparowały mi z głowy. Zatem mam coś .... Question from @Misiur

October 2018 1 23 Report

Zasadniczo to wzór z fizyki, ale to podstawy matmy - przy czym wyparowały mi z głowy. Zatem mam coś takiego:

$\frac{x}{(d-x)} = \sqrt{\frac{q1}{q2}}$

Jak krok po kroku zrobić z tego równanie z x'em po lewej stronie (bez x po prawej?). Dzięki

$\frac{x}{(d-x)}=\sqrt{\frac{q1}{q2}} |\times(d-x)\\x=\frac{\sqrt{q1}}{\sqrt{q2}}\times d-\frac{\sqrt{q1}}{\sqrt{q2}}\times x|\times \sqrt{q2}\\x\times \sqrt{q2}=\sqrt{q1}\times d-\sqrt{q1}\times x\\x\times \sqrt{q2}+x\times\sqrt{q1}=\sqrt{q1}\times d\\x(\sqrt{q2}+\sqrt{q1})=\sqrt{q1}\times d|:(\sqrt{q2}+\sqrt{q1})\\x=\frac{\sqrt{q1}\times d}{\sqrt{q2}+\sqrt{q1}}$

0 votes Thanks 0

Znowu to samo zadanie, czuję się zirytowany.Wzór początkowy:Po początkowych przekształceniach wychodziDalej próbowałem coś jakxxAlternatywny wzór jest na http://zadane.pl/zadanie/3893079Jednak w książce w odpowiedziach jest W jaki sposób tak uprościli? Taki wzór jest w dwóch różnych działach książki

Answer

Misiur September 2018 | 0 Replies

Z motorówki płynącej w górę rzeki wypadło koło ratunkowe. Po upływie czasu t = 0,5h zauważono zgubę - motorówka zawróciła i płynąc tak samo szybko względem wody, dogoniła koło, które w tym czasie (od momentu zgubienia do momentu dogonienia koła) przebyło odległość s = 3 km. Zależy mi na opisie krok po kroku, samą odpowiedź znam.

Answer

Misiur September 2018 | 0 Replies

Za poprawienie tekstu 30 pkt: Few years ago I had played basketball during PE lesson. After few minutes from the beginning of the match, when everyone had warmed up, game became faster. My team was building offensive action, so I had followed them. I have turned aroung to be able to recive a ball. I hadn't noticed my classmate who had beed stangind right behind me (he was almost 2x heavier than me). Someone passed me the ball. Before I realized I was lying on the floor. Later my friend told me, that I had been pushed from behind by my classmate. When I had been falling I had automatically protected my head by keeping whole body up on hands. Unfortulately my small finger in right hand had bent itself, and became overwhelmed by the rest of the body. In our gym floor is made of concrete, covered with very thin rubber coating. My PE teacher had run up to me, and lead me to the school nurse. After my fall, funger was yellow, then it changed its color into purple. Nurse bandaged it, and sent me home. Parents weren't too happy. Well, accidents happen to everyone whithout exception. We went to general practise - my finger was examined again, doctor did an X-Ray. He said that finger isn't broken, and everyting should be okay in 2-3 weeks. Deep down I was glad about that I hadn't to take the final piano exam. In spite of this bright side, my finger didn't recovered after month. When I went again to doctor, he said that probably my bone has been fractured, but it was invisible on X-Ray. I had to wear splint for over month during holiday. Now I don't feel any consequences , and I don't have any scar, but I wouldn't to experience this again.

Answer

Recommend Questions

Life Enjoy

Get in touch

Social