Question

please use MATlab and answer in 15 minutes

and Data 2 and the two fitted lines over the range o 3.3 Plot on the same groph Data 3.4 Find the value of x at which the two fitted lines are equal Dr Test ".il 39%)[13:43 PM VIVA Di Answer 1 of1 %Straight line, Y-MX + C X1 -0.2:0.6.2; Y1 [60 350 700 900] P1- polyfit(X1, Y1,1); YP1 polyval(P1, X1); M1 P1 (1) C1 P1(2) plot(X1, Y1 , 'ro', X1, YPI , 'b-'); X2-6:9; Y2 2180 2160 2110 2000]; P2 polyfit(X2, Y2,1); YP2 - polyval(P2, X2); M2-P2(1) C2 P2(2) lgure plot(X2, Y2, 'ms', X2, YP2, 'k-'); Output: Command Window 478.33 c1 -23.667 D 2611139% 13:43 PM VIVA 冂+ Answer 1 of 1 478.33 -23.667 M2 -59 C2 = 2555 1000 900 800 700 600 500 400 300 200 ".il 39%)[13:43 PM VIVA Di 冂+ Answer 1 of1 1000 900 800 700 600 500 400 300 200 100 0.2 0.4 0.6 0.8 1.2 1.4 1.6 1.82 2250 2200 2150 2100 2050 2000 6.5 8.5 7.5

Answer 1

Code:

clc
clear

%Straight line, Y = MX + C
X = linspace(0, 10, 4);
Y1 = [60 350 700 900];

P1 = polyfit(X, Y1, 1);
YP1 = polyval(P1, X);

M1 = P1(1)
C1 = P1(2)

plot(X, Y1, 'ro', X, YP1, 'b-');

Y2 = [2180 2160 2110 2000];

P2 = polyfit(X, Y2, 1);
YP2 = polyval(P2, X);

M2 = P2(1)
C2 = P2(2)
hold on
plot(X, Y2, 'ms', X, YP2, 'k-');
legend('data1', 'striaght line 1', 'data2', 'striaght line 2')

figure
XQ = 0:0.01:25;
Ys1 = interp1(X,Y1,XQ,'linear','extrap');
Ys2 = interp1(X,Y2,XQ,'linear','extrap');
plot(XQ, Ys1, XQ, Ys2);

Output:

2500 O data1 striaght line 1 □ data2 2000 striaght line 2 1500 1000 500 0 0 123 4 5 67 8 9 10

Figure 2 File Edit View Insert Tools Desktop Window Help 1800 X: 21.83 Y: 1610 1700 1600 1500 1400 1300 1200 21 20 19 18 17 16

AT X = 21.83 approx values are same