1. persamaan garis yang melalui titik potong garis y=3x-5 dan y=4x-7 dan sejajar dengan garis 5x-y-12=0 adalah..
2. koordinat kutub suati titik (4,45'). koordinat cartesius titik tersebut adalah...
3. dik barisan geometri U6= 8 dan U3= 1 . jumlah delapan suku pertama barisan tersebut adalah...
2. koordinat kutub suati titik (4,45'). koordinat cartesius titik tersebut adalah...
3. dik barisan geometri U6= 8 dan U3= 1 . jumlah delapan suku pertama barisan tersebut adalah...
izharulhaq78
![\displaystyle \frac{U_6}{U_3}=\frac{ar^5}{ar^2}\\\frac{8}{1}=\frac{r^5}{r^2}\\8=r^3\\\sqrt[3]8=r\\2=r\\\\ar^2=1\\a\times2^2=1\\a=\frac14\\\\S_n=\frac{a(r^n-1)}{r-1}\\S_8=\frac{\frac{1}{4}(2^8-1)}{2-1}\\S_8=\frac{\frac{1}{4}(256-1)}{1}\\S_8=\frac{255}{4}\\\boxed{\boxed{S_8=63\frac{3}{4}}}](https://tex.z-dn.net/?f=%5Cdisplaystyle+%5Cfrac%7BU_6%7D%7BU_3%7D%3D%5Cfrac%7Bar%5E5%7D%7Bar%5E2%7D%5C%5C%5Cfrac%7B8%7D%7B1%7D%3D%5Cfrac%7Br%5E5%7D%7Br%5E2%7D%5C%5C8%3Dr%5E3%5C%5C%5Csqrt%5B3%5D8%3Dr%5C%5C2%3Dr%5C%5C%5C%5Car%5E2%3D1%5C%5Ca%5Ctimes2%5E2%3D1%5C%5Ca%3D%5Cfrac14%5C%5C%5C%5CS_n%3D%5Cfrac%7Ba%28r%5En-1%29%7D%7Br-1%7D%5C%5CS_8%3D%5Cfrac%7B%5Cfrac%7B1%7D%7B4%7D%282%5E8-1%29%7D%7B2-1%7D%5C%5CS_8%3D%5Cfrac%7B%5Cfrac%7B1%7D%7B4%7D%28256-1%29%7D%7B1%7D%5C%5CS_8%3D%5Cfrac%7B255%7D%7B4%7D%5C%5C%5Cboxed%7B%5Cboxed%7BS_8%3D63%5Cfrac%7B3%7D%7B4%7D%7D%7D "\displaystyle \frac{U_6}{U_3}=\frac{ar^5}{ar^2}\\\frac{8}{1}=\frac{r^5}{r^2}\\8=r^3\\\sqrt[3]8=r\\2=r\\\\ar^2=1\\a\times2^2=1\\a=\frac14\\\\S_n=\frac{a(r^n-1)}{r-1}\\S_8=\frac{\frac{1}{4}(2^8-1)}{2-1}\\S_8=\frac{\frac{1}{4}(256-1)}{1}\\S_8=\frac{255}{4}\\\boxed{\boxed{S_8=63\frac{3}{4}}}")
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yennivitri
trus kalau no 2 dan tiga gmana yah????
izharulhaq78
sudah ditambahkan
yennivitri
ok,, makasih yah kak