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+// Problem no 4.4.13,Page No.103
+
+clc;clear;
+close;
+F_E=20 //KN //Pt Load at E
+F_C=30 //KN //Pt Load at C
+F_B=60 //KN //Pt Load at B
+L_AB=1.5;L_BC=1.5;L_CD=1.5 //m //Length of AB,BC,CD respectively
+L_DE=2.5 //m //Length od DE
+L_AD=4.5 //m //Length of AD
+L=7 //m //Length of beam
+w=30 //KN/m
+
+//Calculations
+
+//LEt R_A and R_D be the reactions at A and D
+//R_A+R_D=245
+
+//Taking moment at A
+//M_A=0=-R_D*(L_BC+L_AB+L_CD)+F_E*L+w*L_Ad**2*2**-1+F_C*(L_AB+L_BC)+F_B*L_AB
+R_D=-(-(F_E*L)-(w*L_AD**2*2**-1)-F_C*(L_AB+L_BC)-F_B*L_AB)*(L_BC+L_AB+L_CD)**-1
+R_A=245-R_D
+
+//Shear Force Calculations
+
+//Shear Force at C
+V_E1=0
+V_E2=-F_E
+
+//Shear Force at D
+V_D1=V_E2
+V_D2=V_E2+R_D
+
+//Shear Force at C
+V_C1=V_D2
+V_C2=V_D2-F_C-w*L_CD
+
+//Shear Force at B
+V_B1=V_C2
+V_B2=-F_E+R_D-F_C-w*(L_BC+L_CD)-F_B
+
+//Shear Force at A
+V_A=-F_E-F_C-F_B-w*L_AD+R_D
+
+//Pt of contraflexure
+//Let F be the pt and EF=x
+//V_F=-F_E-F_C+R_D-w*L_FE+w*L_DE
+L_FE=-(F_E+F_C-R_D-w*L_DE)*w**-1
+L_FD=L_FE-L_DE
+L_FC=L_FE-L_CD-L_DE
+
+//Bending Moment Calculations
+
+//Bending Moment at E
+M_E=0
+
+//Bending Moment at D
+M_D=-F_E*L_DE
+
+//Bending Moment at C
+M_C=-F_E*(L_CD+L_DE)+R_D*L_CD-w*L_CD**2*2**-1
+
+//Bending Moment at F
+M_F=-w*L_FD**2*2**-1-F_C*L_FC+R_D*L_FD-F_E*L_FE
+
+//Bending Moment at B
+M_B=-F_E*(L_DE+L_CD+L_BC)-F_C*L_BC+R_D*(L_CD+L_BC)-w*(L_BC+L_CD)**2*2**-1
+
+//Bending Moment at A
+M_A=-F_E*L+R_D*(L_AD)-F_C*(L_BC+L_AB)-F_B*L_AB-w*(L_AD)**2*2**-1
+
+//Bending Moment at F
+M_F=-F_E*L_FE+R_D*L_FD-F_C*L_FC-w*L_FD**2*2**-1
+
+//Pt of contraflexure
+//Let G be the pt and GE=y
+//M_G=-F_E*L_GE+R_D*(L_GE-L_DE)-F_C*(L_GE-L_DE)**2*2**-1
+//After substituting values and further simplifying we get
+//y**2-12.9+29.35=0
+a=1
+b=-12.9
+c=29.35
+
+X=b**2-4*a*c
+
+y1=(-b+X**0.5)*(2*a)**-1
+y2=(-b-X**0.5)*(2*a)**-1
+
+//Result
+printf("The Shear Force and Bending Moment Diagrams are the results")
+
+//Plotting the Shear Force Diagram
+subplot(2,1,1)
+X1=[0,0,L_DE,L_DE,L_DE+L_CD,L_DE+L_CD,L_DE+L_CD+L_BC,L_DE+L_CD+L_BC,L_DE+L_CD+L_BC+L_AB,L_DE+L_CD+L_BC+L_AB]                   
+Y1=[V_E1,V_E2,V_D1,V_D2,V_C1,V_C2,V_B1,V_B2,V_A,0]
+Z1=[0,0,0,0,0,0,0,0,0,0]
+plot(X1,Y1,X1,Z1)
+xlabel("Length x in m")
+ylabel("Shear Force in kN")
+title("the Shear Force Diagram")
+
+//Plotting the Bending Moment Diagram
+subplot(2,1,2)
+X2=[0,L_DE,L_DE+L_CD,L_DE+L_CD+L_FC,L_DE+L_CD+L_BC,L_DE+L_CD+L_BC+L_AB]
+Y2=[M_E,M_D,M_C,M_F,M_B,M_A]          
+Z2=[0,0,0,0,0,0]
+plot(X2,Y2,X2,Z2)
+xlabel("Length in m")
+ylabel("Bending Moment in kN.m")
+title("the Bending Moment Diagram")