6458+56379

another cell

46378 86786

566 7 88  9

543!

2^5^4

Pi

Sin[3]

( )

function[]

{}

array[[ ]]

(* comment *)

Pi

N[Pi]

(Sin[3]+Pi)/E^(4/5)

N[(Sin[3]+Pi)/E^(4/5)]

N[Sin[3]]

Sin[3]//N

N@Sin[3]

Sin[3.]

Sin[3.00000000000000000000000000000000000000000000]

(Sin[3]-Out[20])/Sin[3]

Pi^2

Pi^2.

123!/7^40

?N

?*Form

?Plot*

a=3

Set[b,3]

ParametricPlot3D

c

Sin[3,a]

c=Sin[3,3]

c

a

?a

d=a Pi

e:=a Pi

a

a = Pi;

d

e

?d

?e

?SetDelayed

x^2+x+3

y=x^3+x-1

{x^2+x+3, 4, 5., Pi}

{{x^2+x+3, 4}, 5., Pi}

l={{3+x+(x^2),4},5.`,π}

l//ColumnForm

m={{a,b,c},{d,Pi,E}}

m//MatrixForm

m//TableForm

{{π,3,Sin[3,3]},{3 π,π,E,4}}

m={{π,3,Sin[3,3]},{3 π,π,E,4}}//MatrixForm

m//FullForm

FullForm[{{π,3,Sin[3,3]},{3 π,π,E,4}}]

{{π,3,Sin[3,3]},{3 π,π,E,4}}//TreeForm

g[{{π,3,Sin[3]},{3 π,π,E,4}}]//TreeForm

g[{{π,3,Sin[3]},{3 π,π,E,4}}]//Depth

D[x^3-Sin[x] x^2+3,x]

D=-3

D

E=-1

E//N

N

Clear[a,b,c]

{a,b,c,d}[[3]]

{a,b,c,d}[[-3]]

{a,b,c,d}//FullForm

{a,b,c,d}[[0]]

{a,b,c+d,d}[[3]]

c+3 π//FullForm

{a,b,c+d,d}[[3,2]]

{a,b,c+d,d}[[3,2]][[0]]

{1,2,3,4}//Length

a+a*a+a^2+a!

%

%%

%%%

%[1]

%1

Sum[1/2^i,{i,1,10}]

Sum[1/2^i,{j,1,10}]

Sum[1/i^2,{i,1,Infinity}]

Sum[1./i^2,{i,1,Infinity}]

NSum[1/i^2,{i,1,Infinity}]

Sum[1/i^2,{i,1,Infinity}]//N

(NSum[1/i^2,{i,1,Infinity}]-Sum[1/i^2,{i,1,Infinity}])/Sum[1/i^2,{i,1,Infinity}]

7!

7.!

7.5!

(15/2)!

Cos[{1,2,3}[[3]]][[2]]

Cos[{1,2,3}[[3]]][[1]]

Cos[3][[0]]

Head[Cos[3]]

Head[Cos[3]][Pi]

Cos[Pi/4]

Apply[f,{1,2,3,a,b,c}]//TreeForm

Apply[f,{1,2,3,a,b,c}]//Depth

Apply[Times,{1,2,3,a,b,a}]

Apply[Plus,{1,a,3,2,b,a}]

Times@@{1,2,3,a,b,a}

Times@{1,2,3,a,b,a}

Times[3,f]

Times[3]

Times[3,{1,2,3,a,b,a}]

3+{1,2,3,a,b,a}

{3,2}+{1,2,3,a,b,a}

{1,2,3,a,b,Pi,"Paolo"}^2

{1,2,3,a,b,Pi,"Paolo"}^{2}

{3,a,Pi,"Paolo"}^{2,1,3,Pi}