Пошаговое объяснение:
http://www.borealoutdoor.com/bmc/video-poi-v-mcg-tv01.html
http://www.borealoutdoor.com/bmc/video-poi-v-mcg-tv02.html
http://www.borealoutdoor.com/bmc/video-poi-v-mcg-tv03.html
http://www.borealoutdoor.com/bmc/video-poi-v-mcg-tv04.html
http://www.borealoutdoor.com/bmc/video-poi-v-mcg-jp01.html
http://www.borealoutdoor.com/bmc/video-poi-v-mcg-jp02.html
http://www.borealoutdoor.com/bmc/video-poi-v-mcg-jp03.html
http://www.borealoutdoor.com/bmc/video-poi-v-mcg-jp04.html
http://www.borealoutdoor.com/bmc/video-poi-v-mcg-es01.html
http://www.borealoutdoor.com/bmc/video-poi-v-mcg-es02.html
http://www.borealoutdoor.com/bmc/video-poi-v-mcg-es03.html
http://www.borealoutdoor.com/bmc/video-poi-v-mcg-es04.html
http://www.borealoutdoor.com/bmc/video-poi-v-mcg-It01.html
http://www.borealoutdoor.com/bmc/video-poi-v-mcg-It02.html
http://www.borealoutdoor.com/bmc/video-poi-v-mcg-It03.html
http://www.borealoutdoor.com/bmc/video-poi-v-mcg-It04.html
http://www.borealoutdoor.com/bmc/video-poi-v-mcg-fr01.html
http://www.borealoutdoor.com/bmc/video-poi-v-mcg-fr02.html
http://www.borealoutdoor.com/bmc/video-poi-v-mcg-fr03.html
http://www.borealoutdoor.com/bmc/video-poi-v-mcg-fr04.html
http://www.borealoutdoor.com/bmc/video-poi-v-mcg-gr01.html
http://www.borealoutdoor.com/bmc/video-poi-v-mcg-gr02.html
http://www.borealoutdoor.com/bmc/video-poi-v-mcg-gr03.html
http://www.borealoutdoor.com/bmc/video-poi-v-mcg-gr04.html
https://theshedcafe.com.au/uox/video-poi-v-mcg-tv01.html
https://theshedcafe.com.au/uox/video-poi-v-mcg-tv02.html
https://theshedcafe.com.au/uox/video-poi-v-mcg-tv03.html
https://theshedcafe.com.au/uox/video-poi-v-mcg-tv04.html
https://theshedcafe.com.au/uox/video-poi-v-mcg-jp01.html
https://theshedcafe.com.au/uox/video-poi-v-mcg-jp02.html
https://theshedcafe.com.au/uox/video-poi-v-mcg-jp03.html
https://theshedcafe.com.au/uox/video-poi-v-mcg-jp04.html
https://theshedcafe.com.au/uox/video-poi-v-mcg-es01.html
https://theshedcafe.com.au/uox/video-poi-v-mcg-es02.html
https://theshedcafe.com.au/uox/video-poi-v-mcg-es03.html
https://theshedcafe.com.au/uox/video-poi-v-mcg-es04.html
https://theshedcafe.com.au/uox/video-poi-v-mcg-It01.html
https://theshedcafe.com.au/uox/video-poi-v-mcg-It02.html
https://theshedcafe.com.au/uox/video-poi-v-mcg-It03.html
https://theshedcafe.com.au/uox/video-poi-v-mcg-It04.html
https://theshedcafe.com.au/uox/video-poi-v-mcg-fr01.html
https://theshedcafe.com.au/uox/video-poi-v-mcg-fr02.html
https://theshedcafe.com.au/uox/video-poi-v-mcg-fr03.html
https://theshedcafe.com.au/uox/video-poi-v-mcg-fr04.html
https://theshedcafe.com.au/uox/video-poi-v-mcg-gr01.html
https://theshedcafe.com.au/uox/video-poi-v-mcg-gr02.html
https://theshedcafe.com.au/uox/video-poi-v-mcg-gr03.html
https://theshedcafe.com.au/uox/video-poi-v-mcg-gr04.html
x dx 1 2x dx 1 d(7+x²) 1
∫ = ∫ = ∫ = ln(7+x²)+C
7+x² 2 7+x² 2 7+x² 2
[1/2 *ln(7+x²)+C ]¹= 1/2*[ 2x /(7+x²)+0]= x /(7+x²)
x+18 (x-2)+20 1 2(x-2) dx
2) ∫dx=∫ dx= ∫ dx+20 ∫ =
x²-4x-12 (x-2)²-16 2 (x-2)²-16 (x-2)²-16
1 1 | x-2-4 | 1 5 | x-6 |
= *ln|(x-2)²-16|+20 * *ln || +C= *ln |x²-4x-12|+*ln || +C
2 2*8 | x-2+4 | 2 4 | x+2 |
3) ∫(3-x) cosx dx=[ u=3-x , du=-dx , dv=cosx dx , v=sinx ] =(3-x)sinx+∫ sinx dx=
=(3-x)sinx-cosx+C
[(3-x)sinx-cosx]¹= -sinx+(3-x)cosx+sinx +0=(3-x)cosx
Пошаговое объяснение:
Красных - 14
Белых - 16
Розовых - 12
Количество составить букет из 1-й красной розы, 2-х белых и 2-х розовых роз можно найти так:
*** Примечание:
Одну розу из 14-ти можно выбрать 14-ю , количество выбрать 2 розы из 16 и 2 розы из 12 - это число сочетаний из 16 по 2 и из 12 по 2, т.к. порядок выбора значения не имеет. Затем, количество выбора роз каждого цвета перемножаем.