ilndht / gi-i-ph-ng-tr-nh-b-c-2

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gi-i-ph-ng-tr-nh-b-c-2

while loop: x= input ( " MODE = ") if x== "1" : # Phương trình bậc 2 a,b,c= float( input ( "a : ")),float( input ( "b : ")),float( input ("c : ")) d= ((b**2)-4ac) if d < 0 : print ( " vô nghiệm " ) if d== 0 : x = ((-b+(d)**0.5)/(2a)) print ("x=",x) if d> 0 : x1 = ((-b+(d)**0.5)/(2a)) x2 = ((-b-(d)**0.5)/(2a)) print ("x1=",x1) print ("x2=",x2) elif x== "2" : #khổ dâm hình không gian print ( " A ") xA,yA,zA= float( input ( "xA : ")),float( input ( "yA : ")),float(input("zA : ")) print ( " B ") xB,yB,zB= float( input ( "xB : ")),float( input ( "yB : ")),float(input("zB : ")) print ( " C ") xC,yC,zC= float( input ( "xC : ")),float( input ( "yC : ")),float(input("zC : ")) print ( " D ") xD,yD,zD= float( input ( "xD : ")),float( input ( "yD : ")),float(input("zD : ")) xAB,yAB,zAB,xAC,yAC,zAC,xAD,yAD,zAD= (xB-xA),(yB-yA),(zB-zA),(xC-xA),(yC-yA),(zC-zA),(xD-xA),(yD-yA),(zD-zA) x1 = (yABzAC-yACzAB)xAD x2 = (zABxAC-xABzAC)yAD x3 = (xAByAC-xACyAB)zAD VABCD= (1/6)abs(x1+x2+x3) print ("VABCD=",VABCD) elif x== "3" : # 2 phuong trinh 2 an a1,b1,c1= float( input ( "a1 : ")),float( input ( "b1 : ")),float(input("c1 : ")) a2,b2,c2= float( input ( "a2 : ")),float( input ( "b2 : ")),float(input("c2 : ")) x = ((c1b2-c2b1)/(a1b2-b1a2)) y = ((c1a2-a1c2)/(b1a2-a1*b2)) print ("x=",x) print ("y=",y) elif x== "off" : loop = False