Example 3

1

To input 1+ x + 1dx

 

0

Ab+4(MATH)6(g)1(dx)

v+b

ea

fb

e

w

Example 4

To input 2

1

2

2

1

2

 

 

2

 

 

 

Ac*4(MATH)1(MAT)1(2×2)

vbcc

ee

!x(')ce

e!x(')ceevbcc

w

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