Accepted characters: numbers decimal point markers (period orcomma) sign indicat

Accepted characters: numbers decimal point markers (period orcomma) sign indicators (-) spaces (e.g. as thousands separator5 000) E or e (used in scientific notation). NOTE: Forscientific notation a period MUST be used as the decimal pointmarker. Complex numbers should be in the form (a + bi) where aand b need to have explicitly stated values. For example: {1+1i}is valid whereas {1+i} is not. {0+9i} is valid whereas {9i} isnot.