1+1

(Sqrt[5])

(Sqrt[5.])

N[(Sqrt[5])]

N[(Sqrt[5]),100]

(a+b)*(a-b)
Expand[%]

%

c=3;
d=4;
e=c+d;

husa11=11;
11husa+husa

kyncl je vul

r*h*f

?Sin

LaplaceTransform

x=10;
ClearAll[x];
Integrate[(x^10)*Sin[(1/x)],x]

N[Pi]
Pi//N
N@Pi

120!//N

list={1,2,3,4};
Sin[list]

grafik=Plot[(t^3)Sin[5t+0.4],{t,0,10}];

grafik

DSolve[(x^2)*y''[x]+x*y'[x]+y[x]==0,y[x],x]

ClearAll[y]
DSolve[{(x^2)*y''[x]+x*y'[x]+y[x]==0,y'[1]==1,y[1]==-1},y[x],x]
Plot[Evaluate[y[x]/.%], {x,-10,10}]

Plot[-Cos[Log[x]]+Sin[Log[x]],{x,1,10}]