Even though most people in the original target market for electric toothbrushes already knew how to brush their teeth, consumers still had some learning to do in order to make good use of the new brushing technique. The electric toothbrush is an example of a .

dynamically continuous innovation

Explanation:

Dynamically continuous innovations take place when a new product is launched that changes consumer habits, but that change is not large enough to change the usage patterns of the customers. For example, cable TV changed to satellite TV which represents a technological innovation that didn't change usage patterns.

The change from a regular toothbrush to an electric toothbrush represents an innovation but it will not change how many times you must brush your teeth per day.

start by isolating the variable on one side by adding 43w^2 to both sides.   the equation will read:

25w^2+5=0

*subtract 5 from both sides*

25w^2=-5

*divide both sides by 25*

w^2=-1/5

*take the square root of both sides*

w=√(-1/5)

the square root of -1 is i.   the square root of 5 remains √5

the answer is i/√5.

hope this

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