approx of erf() | Desmos

Expression 4: signum left parenthesis, "x" , right parenthesis times StartRoot, 1 minus exp left parenthesis, negative "x" squared left parenthesis, 1 plus StartFraction, 0.2 7 3 2 4 Over 1 plus 0.1 4 "x" squared , EndFraction , right parenthesis , right parenthesis , EndRoot

4

Expression 5: signum left parenthesis, "X" , right parenthesis times StartRoot, 1 minus exp left parenthesis, negative "a" "X" squared , right parenthesis , EndRoot tilde error function left parenthesis, "X" , right parenthesis

5

Expression 6: "X" equals 3 StartFraction, left bracket, negative 100...1 0 0 , right bracket Over 100 , EndFraction

equals

negative 3

negative 2.9 7

negative 2.9 4

negative 2.9 1

negative 2.8 8

negative 2.8 5

negative 2.8 2

negative 2.7 9

negative 2.7 6

negative 2.7 3

negative 2.7

negative 2.6 7

negative 2.6 4

negative 2.6 1

negative 2.5 8

201 element list

6

reciprocal:

7

Expression 8: "x" equals signum left parenthesis, "y" , right parenthesis StartRoot, StartFraction, ln left parenthesis, 1 minus "y" squared , right parenthesis Over negative "a" , EndFraction , EndRoot

8

9

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