It's hard to type and hard to read the "inverse tangent" function, as you've seen (above).
So, use "arctan x" instead.
Then the problem becomes: "differentiate cos (arctan x)."
You must apply first the rule for differentiating the cosine function, and next apply the rule for differentiating the arctan function:
(d/dx) cos (arctan x) = - sin (arctan x) * [1/(1+x^2)]
Answer:
y = -4/3x - 1
Step-by-step explanation:
There is about a 16.5% chance to pull an 8-inch piece, this is theoretical probability though. <span />
What are your questions? If so what type of mathematic class: Algebra, Algebra 2, Geometery, Trigeometery, Pre-calculus, Calculus..
