Ahmad Eka Ramadhan Angga Surya Ardiansyah Arum Sekarini Dewi K A Emiliana Wahyu Fahrurrizal Laitupa Happy Athikah D Haries Aprival P Hismi Susane TUGAS MATEMATIKA TEKNIK KIMIA I DATA X-Y4 Di susun Oleh:

Ahmad Eka Ramadhan

Angga Surya

Ardiansyah

Arum Sekarini

Dewi K A

Emiliana Wahyu

Fahrurrizal Laitupa

Happy Athikah D

Haries Aprival P

Hismi Susane

Pengolahan data secara Manual 31.0823 162.89 4259.7 4055.71 4676 784 140 749.7 149.7 28 11.6964 44.32 2004.1 1672.81 2401 343 49 286.3 40.9 7 6.1009 34.97 1170 1056.25 1296 216 36 195 32.5 6 6.8644 27.02 610 595.36 625 125 25 122 24.4 5 3.1329 20.47 299.2 349.69 256 64 16 74.8 18.7 4 1.7424 15.32 126 196 81 27 9 42 14 3 1.3689 11.57 41.6 108.16 16 8 4 20.8 10.4 2 0.1764 9.22 8.8 77.44 1 1 1 8.8 8.8 1 (y-ŷ) 2 ŷ X 2 Y Y 2 X 4 X 3 X 2 XY Y X

149 = 7a + 28b + 140c ………(1) 748.7 = 28a+140b+748c……..(2) 4254.7= 140a+784b+4676c....(3 )

149 = 7a + 28b + 140c ………(1) 748.7 = 28a+140b+748c……..(2) 598 =28a+112b+560c 748.7=28a+140b+784c -150.7 =-28b-224b .......................(4) 4254.7= 140a+784b+4676c.....(3) 748.7 = 28a+140b+748c……..(2) 3743.5=140a+700b+3920c 4254.7=140a+784b+4676c -511.2 = -84b-756c .......................(5) x 4 x 1 x 5 x 1

-150.7 =-28b-224b.......................(4) -452.1 = -84b-672c x 3 -511.2 = -84b-756c .....................(5) x 1 -511.2 = -84b-756c 59.1= 84c c = 0.7 b = 0.25 a = 8.27 Y = 0,7x 2 + 0.25x + 8,27

= 1- 31,0823 =0,9636 4055-22410 7 – ( ( ) ) 2 n

PENYAJIAN DATA DALAM BENTUK TABEL 40.9 32.5 24.2 18.7 14 10.4 8.8 Y 7 6 5 4 3 2 1 X

Penyajian data dalam bentuk grafik polynomial dengan EXCEL