20 lines
328 B
Plaintext
20 lines
328 B
Plaintext
|
#zad1
|
||
|
|
A=[2,-2,1,-1;-1,4,-5,3;1,1,-1,1;-4,2,1,-2];
|
||
|
|
b=[7;1;4;6];
|
||
|
|
A\b
|
||
|
|
#zad2
|
||
|
|
syms x
|
||
|
|
solve(x^3-21*x+20==0,x)
|
||
|
|
#zad3
|
||
|
|
x=-2.0:0.05:2;
|
||
|
|
y=-2.0:0.05:2;
|
||
|
|
plot(x,x.^2-2*x+3);
|
||
|
|
plot(x,cos(2*x),"+k");
|
||
|
|
plot(x,sin(1./x),"*b");
|
||
|
|
grid on
|
||
|
|
x=-2:0.1:2;
|
||
|
|
y=-2:0.1:2;
|
||
|
|
[xx,yy]=meshgrid(x,y);
|
||
|
|
mesh(xx, yy, xx.^2+yy.^2)
|
||
|
|
mesh(xx, yy, xx.^2-yy.^2 + 2*x.*y.^2+1)
|