How to find ?

Method I:

...... 1

...... 2

2-1

Method II:

Which method is true?

I think method II is wrong and I am not sure the 0/0 fraction in method I is true or not...because 0 as denominator is undefined...

Anyone can help me?

Results 1 to 2 of 2

- March 22nd 2008, 08:24 PM #1

- March 22nd 2008, 08:35 PM #2
yes, method II is wrong, as you ended up with the wrong answer, but, in any case, you are making things wwaaayyyy too complicated.

recall that

where is a constant.

in other words, when finding the derivative of a function with a constant in front of it, we can simply find the derivative of the function without the constant, and then multiply it by the constant.

so,

the general rule: for some constant, so you could actually omit the second line altogether