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  1. D

    Chain Rule Help

    I am presenting a problem in front of the class tomorrow and I am slightly confused on the steps for my problem. The problem is: Find the derivative of the given function f(w) = ln[cos(w-1)] The answer in the back of my book shows the derivative is -tan(w-1) - but I'm my steps aren't...
  2. D

    Chain Rule Help

    I am presenting a problem in front of the class tomorrow and I am slightly confused on the steps for my problem. The problem is: Find the derivative of the given function f(w) = ln[cos(w-1)] The answer in the back of my book shows the derivative is -tan(w-1) - but I'm my steps aren't...
  3. D

    Quick derivative

    i am having trouble with a fairly easy derivative - and was wondering if someone could show me the steps how to find this? Find this derivative algebraically f(x) = x^3 (x cubed) at x= -2 The answer in the back of the book says the derivative is 12 - but I did the work and got 4. Please...
  4. D

    Trig Help - Need Help Verifying This Identity!

    im trying to verify this identity - sin x + tan x / 1 + cos x = tan x - i get lost very easily and need the steps - can anyone help me? :yuck:
  5. D

    Trig Help - Need Help Verifying This Identity!

    im trying to verify this identity - sin x + tan x / 1 + cos x = tan x - i get lost very easily and need the steps - can anyone help me? :yuck:
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