Program mencari Invers Matriks Ordo 3 x 3

Disini saya akan membagikan Source Code menghitung dan mencari Kofaktor, Adjoint, Determinan dan Invers dengan menggunakan bahasa pemrograman python agar memudahkan anda dalam mengoreksi jawaban martrik ordo 3 x 3. Meskipun program yang saya buat ini belum sempurna setidaknya anda dapat memberika.

progam invers matrix ordo 3x3

def banner():
 print("Menghitung invers matriks 3x3")

def determinan():
 global det
 det = (bar1[0] * bar2[1] * bar3[2]) + (bar1[1] * bar2[2] * bar3[0]) + (bar1[2] * bar2[0] * bar3[1]) - (bar1[2] * bar2[1] * bar3[0]) - (bar1[0] * bar2[2] * bar3[1]) - (bar1[1] * bar2[0] * bar3[2])
 print("Nilai determinannya adalah: ",det)
 hitung()

def hitung():
 m11 = (bar2[1] * bar3[2]) - (bar2[2] * bar3[1])
 m12 = (-1 * ((bar2[0] * bar3[2]) - (bar2[2] * bar3[0])))
 m13 = (bar2[0] * bar3[1]) - (bar2[1] * bar3[0])

 m21 = (-1 * ((bar1[1] * bar3[2]) - (bar1[2] * bar3[1])))
 m22 = (bar1[0] * bar3[2]) - (bar1[2] * bar3[0])
 m23 = (-1 * ((bar1[0] * bar3[1]) - (bar1[1] * bar3[0])))

 m31 = (bar1[1] * bar2[2]) - (bar1[2] * bar2[1])
 m32 = (-1 * ((bar1[0] * bar2[2]) - (bar1[2] * bar2[0])))
 m33 = (bar1[0] * bar2[1]) - (bar1[1] * bar2[0])

 print("\n\n Kofaktor matriks adalah")
 print("|", m11, m12, m13, "|")
 print("|", m21, m22, m23, "|")
 print("|", m31, m32, m33, "|")

 print("\n\n Adjoin matriks")
 print("|", m11, m21, m31, "|")
 print("|", m12, m22, m32, "|")
 print("|", m13, m23, m33, "|")

 if det == 0:
  print("Tidak bisa dibagi dengan determinan 0")
  exit()

 print("\n\n Invers matriks")
 print("|", m11/det, m21/det, m31/det, "|")
 print("|", m12/det, m22/det, m32/det, "|")
 print("|", m13/det, m23/det, m33/det, "|")

banner()
print("masukan elemen matriks")
print("contoh :2 4 5")
str_arr = input("masukan baris pertama: ").split(' ')
bar1 = [int(num) for num in str_arr]

str_arr = input("masukan baris kedua  : ").split(' ')
bar2 = [int(num) for num in str_arr]

str_arr = input("masukan baris ketiga : ").split(' ')
bar3 = [int(num) for num in str_arr]

print("|",*bar1,"|")
print("|",*bar2,"|")
print("|",*bar3,"|")

determinan()