1+1

2+2

a=1
b=3

(Sqrt[5])
(Sqrt[5.])
N[(Sqrt[5])]
N[(Sqrt[5]),(10^2)]
(Sqrt[5])//N

Clear[a,b]

(a+2(b^2))*((a/2)+(b^2))

3x

opice12=5
12opic

zak je krvelacny ucitel

h*f*b*v*a*b

Sin

a=5 (*komentar timto zpusobem*)

((a+2(b^2))*((a/2)+(b^2)))/10

LaplaceTransform[(E^t)+(t^2)Cos[2t],t,s]

ClearAll[a,b]
a=5;
b=7;
c=a+b

ArcCos[0.4];
Cos[%];

ArcCos[0.4]

Cos[%]

Sin[Pi]
Pi//Sin
Sin@Pi

Plot[(t^4)Cos[5t+0.4],{t,0,4Pi}]

y[1]==1

ClearAll[y]
DSolve[{(((2+x))^2)*y''[x]+2x*y'[x]+y[x]==0,y[1]==1,y'[1]==1},y[x],x];

Plot[y[x]/.%,{x,0,10}]