CrosswordOpener.com - we know the word that you can`t guess In case of any inconvenience..
The result of mathematical differentiation
Else clues• Inequality
• The instantaneous change of one quantity relative to another
• Df(x)/dx
• A quality that differentiates between similar things
• A bevel gear that permits rotation of two shafts at different speeds
• Used on the rear axle of automobiles to allow wheels to rotate at different speeds on curves