1+1*30

1/7
(1/7)

(((((2/3)/4)/2)/1)/5)

(2^(2^(2^2)))

(Sqrt[(Sqrt[6.])])
N[(Sqrt[(Sqrt[6])])]

cos=5;
cos(1+(10)+3+(2-1))
a=2;
aa=3;

Cos=5
N[Cos[10]]
Cos[10.]

Solve[5*(x^2)-15*x+3==0,x]

ClearAll[x]
Solve[x==10-3,x]

Solve[{2(x^2)+2y==4,6y+a*x==5},{x,y}]

2s
s2

C
I

Solve[Sin[x]==0,x]

FindRoot[Sin[x]==0,{x,3}]

DSolve[{y''[t]+4y'[t]==((Cos[t])^4),y[0]==0,y'[0]==1},y[t],t]

ClearAll[y]
y[0]==5

?*Laplace*

InverseLaplaceTransform[((p+1)/((p^3)+p+1)),p,t]//N

LaplaceTransform[(t^3)((Sin[2t])^2),t,s]

1+100!//N

Sin[5.]

5.//Sin

Sin@5.

N[Pi,50]

Pi//N[#,50]&

Integrate[Sin[(1/x)]*(x^15),x]
∫Sin[(1/x)]*(x^15)\[DifferentialD]x

(∑_(i=1)^Infinity)(1/(i^2))

∞(* esc + inf + esc *)