Hi, Hm, trying to get my head around this the derivative of arctan is So the derivative of should be: But that's apparently wrong. Why?
Follow Math Help Forum on Facebook and Google+
Originally Posted by Jones Hi, Hm, trying to get my head around this the derivative of arctan is So the derivative of should be: But that's apparently wrong. Why? Hi, be careful when you're using the chain rule. where and The denominator of your answer is correct. But look at what you did to the numerator. The numerator is The 0.5 does not dissapear. That is your only mistake.
Thanks
View Tag Cloud