Return the text converted to sentence case

The text string converted to a Sentence Case.

	A
1	MY Sentence in mixed CHARACTERS
2	=UPPER(LEFT(A1, 1))&LOWER(RIGHT(A1, LEN(A1)-1)) = My sentence in mixed characters

Built-in Functions

LEFT - The first or left most characters in a text string.
LEN - The number of characters in a text string.
LOWER - The text string with all the characters converted to lowercase.
RIGHT - The last or right most characters in a text string.
UPPER - The text string with all the characters converted to uppercase.