Sunday, September 19, 2010

Reflection

this week we learned how to solve for derivatives the short way with a shortcut method. you use the constant rule. The constant rule is the derivative of any constant is zero. You also need to know how the power rule. The power rule you take the exponent and bring it to the front of the x and take the number that was the exponent and subtract it by one. An example of a constant rule is: y = 12 the derivative is 0. an example of the power rule is: f(x) = x^3 the derivative would be 3x^2. we also learned how to find the derivative when your given sin or cos. If your given find the derivative of sin x then you could take the sin x and it would become cos x in your answer. If your asked to find the derivative of cos x then you would take cos x and it would become a negative sin x. here’s an example of cos x : y = 2 cos x, y = 2(-sin x), y = -2sin x. here’s an example of sin x: y = sin x/2, y = ½ (cos x), y = ½ cos x

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