2. fsolve, .
3. , disp.
4. . , . plot. y=0 , , , .
deff('y=F(x)', 'y=sin(x)-cos(x.^2)-sin(2*x)')root=fsolve(1,F)disp(root)x=0.5:0.01:2.5 plot (x,F(x),'-b',root,F(root),'xr',x,0,'-k') | 1.1695683 |
3.5
3.5
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3. ,
. . .
1. ( poly)
2. roots.
3. , disp.
4. . , . plot. y=0 , , , .
v=[2 0 4 -6 -3]R=roots(v)disp(R)root=R(3)x=0.5:0.01:2y=2*x.^4+4*x.^2-6*x-3F_root=2*root^4+4*root^2-6*root-3plot(x,y,'-b',root,F_root,'xr',x,0,'-k') | - 0.4129576 + 1.7282075i - 0.4129576 - 1.7282075i 1.2164706 - 0.3905555 |
3.6.
3.6
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4.
. .
1.
2. .
3. , , ( ).
4. , disp.
A=[3 1 1;-3 5 6;1 -4 -2]; B=[-4;36;-19]; X=inv(A)*B disp(X) | - 3. 3. 2. |
3.7.
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3.7
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