Roboguru

Tuliskan lima suku pertama barisan berikut: c.

Pertanyaan

Tuliskan lima suku pertama barisan berikut:

c. begin mathsize 14px style U subscript n equals fraction numerator n squared minus 4 n over denominator 2 plus 3 n end fraction end style

Pembahasan Soal:

begin mathsize 14px style U subscript n equals fraction numerator n squared minus 4 n over denominator 2 plus 3 n end fraction U subscript 1 equals fraction numerator left parenthesis 1 right parenthesis squared minus 4 left parenthesis 1 right parenthesis over denominator 2 plus 3 left parenthesis 1 right parenthesis end fraction equals negative 3 over 5 U subscript 2 equals fraction numerator left parenthesis 2 right parenthesis squared minus 4 left parenthesis 2 right parenthesis over denominator 2 plus 3 left parenthesis 2 right parenthesis end fraction equals fraction numerator negative 4 over denominator 8 end fraction equals negative 1 half U subscript 3 equals fraction numerator left parenthesis 3 right parenthesis squared minus 4 left parenthesis 3 right parenthesis over denominator 2 plus 3 left parenthesis 3 right parenthesis end fraction equals negative 3 over 11 U subscript 4 equals fraction numerator left parenthesis 4 right parenthesis squared minus 4 left parenthesis 4 right parenthesis over denominator 2 plus 3 left parenthesis 4 right parenthesis end fraction equals 0 U subscript 5 equals fraction numerator left parenthesis 5 right parenthesis squared minus 4 left parenthesis 5 right parenthesis over denominator 2 plus 3 left parenthesis 5 right parenthesis end fraction equals 5 over 17  Jadi comma space barisan space nya space adalah space minus 3 over 5 comma space minus 1 half comma space minus 3 over 11 comma space 0 comma space 5 over 17 comma... end style

 

Pembahasan terverifikasi oleh Roboguru

Terakhir diupdate 02 Maret 2021

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