1. For Windows or Linux - Press Ctrl+D
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Enter your derivative problem in the input field.
Press Enter on the keyboard or on the arrow to the right of the input field.
In the pop-up window, select “Find Where Increasing Using Derivatives”. You can also use the search.
Explains the relationship of the derivative with function increasing. If the derivative is positive on the interval (a; b), then the function on it strictly increases. Note that the converse is not true. That is, if a function strictly increases in some interval, then it does not follow from this that its derivative will be positive over this entire interval.