CREATE TABLE table_19993 ("Condition/Parameter" TEXT, "Coordinate velocity v dx/dt in units of c" TEXT, "Velocity angle \\u03b7 in i-radians" TEXT, "Proper velocity w dx/d\\u03c4 in units of c" TEXT, "Lorentz factor \\u03b3 dt/d\\u03c4 = E/mc 2" TEXT)

If the condition/parameter is rapidity of 1 hyperbolic radian, what is the proper velocity w dx/d in units of c?
SELECT "Proper velocity w dx/d\u03c4 in units of c" FROM table_19993 WHERE "Condition/Parameter" = 'Rapidity of 1 hyperbolic radian'
SELECT "Proper velocity w dx/d\u03c4 in units of c" FROM "table_19993" WHERE "Condition/Parameter" = 'Rapidity of 1 hyperbolic radian'