Thursday

July 31, 2014

July 31, 2014

Posted by **hiii** on Thursday, June 28, 2012 at 12:00pm.

I am not sure how to do this and if you can help, that would be awesome. It's the cot that's really tripping me up :/

- calculus -
**Steve**, Thursday, June 28, 2012 at 12:28pm<rant> AARGH! Who are these people that don't understand that π is PI, not PIE? </rant>

y = cot^2(x)

y' = 2cot(x)(-csc^2(x)) = -2cot(x)csc^2(x)

at x=π/4, the slope is -2(1)(2) = -4

the line through (π/4,1) with slope -4 is

(y-1) = -4(x-π/4)

massage that equation into the form you most like.

- calculus -
**hiii**, Thursday, June 28, 2012 at 12:52pmhow did u get -2(1)(2)? did u just plug the PI/4 into the formula?

- calculus -
**Steve**, Thursday, June 28, 2012 at 1:19pmyeah, that's the way one computes the value of f(x) -- plug in the value of x.

- calculus -
**Count Iblis**, Thursday, June 28, 2012 at 1:28pmhttp://wordplay.blogs.nytimes.com/2011/03/14/numberplay-pi-in-the-sky/

**Related Questions**

Calculus - a)The curve with equation: 2y^3 + y^2 - y^5 = x^4 - 2x^3 + x^2 has ...

Calculus - Please help this is due tomorrow and I dont know how to Ive missed a ...

Calculus - Consider the curve y^2+xy+x^2=15. What is dy/dx? Find the two points ...

Calculus - Suppose f(x) is differentiable at x=a. What does tangent line ...

Calculus - Suppose f(x) is differentiable at x=a. What does tangent line ...

Calculus - Suppose f(x) is differentiable at x=a. What does tangent line ...

Calculus - Suppose f(x) is differentiable at x=a. What does tangent line ...

Tangent Lines-Calculus - a line is tangent to the curve y= (x^2 + 3)/ (x+3)^1/2 ...

Calculus - Damon - Find the line which passes through the point (0, 1/4) and is ...

calculus - Given the curve defined by the equation y=cos^2(x) + sqrt(2)* sin(x) ...