Tentukan suku ke n dan suku ke 10 dari barisan geometri 1,2,4,8,...
Jawaban:
Penyelesaian :
Tentukan suku ke n dan suku ke 10 dari barisan geometri 1,2,4,8,...
[tex] \sf \: a = 1 [/tex]
[tex] \sf \: r = \frac{2}{1} [/tex]
[tex] \sf \: r = 2 [/tex]
Menentukan U10
[tex] \sf \: U10 = a \times {r}^{(n - 1)} [/tex]
[tex] \sf \: U10 = 1 \times {2}^{(10 - 1)} [/tex]
[tex] \sf \: U10 = 1 \times {2}^{(9)} [/tex]
[tex] \sf \: U10 = {2}^{(9)} [/tex]
[tex] \sf \: U10 = \underline{{ \red { \sf 512 }}} [/tex]
[tex] \large{ \colorbox{lavender}{ \purple{ \boxed{ \green{ \star{ \purple{ \rm{«Penyelesaian \: Soal» : { \green{ \star}}}}}}}}}}[/tex]
[tex] \: [/tex]
[tex]\huge{ \purple{ \mathfrak{♡Pembahasan♡ : }}}[/tex]
[tex] \: [/tex]
- [tex]\large{\color{magenta}\mathbb{↓ JAWABAN :}}[/tex]
a = 1
r = 2/1 = 2
[tex] \: [/tex]
[tex] \: \: \: \blue{ \sf{u_{ \sf{10 : }}}} \\ \sf{u_{ \sf{10}} = a \times {r}^{(n - 1)} } \\ \sf{ = 1 \times {2}^{(10 - 1)} } \\ \sf{ = {2}^{(9)} } \\ \sf{ = } \: \underline{ \red{\sf{512}}}[/tex]
[tex]~[/tex]
- [tex]\large{\color{cyan}\mathbb{↓ KESIMPULAN }}[/tex]
suku ke 10 dari barisan geometri 1,2,4,8
adalah : [tex]\underline{\boxed{\red{\rm{512}}}}[/tex]
[tex] \: [/tex]
#Koreksi-!!
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[tex]______________________________________________________________________[/tex]
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[tex]\colorbox{ff0000}{} \colorbox{ff4000}{}\colorbox{ff8000}{}\colorbox{ffc000}{}\colorbox{ffff00}{}\colorbox{c0ff00}{}\colorbox{80ff00}{}\colorbox{40ff00}{}\colorbox{00ff00}{}\colorbox{00ff40}{}\colorbox{00ff80}{}\colorbox{00ffc0}{}\colorbox{00ffff}{}\colorbox{00c0ff}{}\colorbox{0080ff}{}\colorbox{0040ff}{}\colorbox{0000ff}{}\colorbox{4000ff}{}\colorbox{8000ff}{}\colorbox{c000ff}{}\colorbox{ff00ff}{}\colorbox{ff00c0}{}\colorbox{ff00a0}{}\colorbox{ff0080}{}\colorbox{ff0040}{}[/tex]
[tex] \: [/tex]
[tex] \colorbox{black}{ \blue{ \boxed{ \boxed{ \rm{@AvrilKim}}}}}[/tex]
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