Tuesday

March 3, 2015

March 3, 2015

Posted by **Robyn** on Friday, October 28, 2011 at 5:06pm.

y=Sin(x) / 2+ Cos (x)

- calculus -
**Steve**, Friday, October 28, 2011 at 5:53pmy' = cosx/2 - sinx

y'=0 where cosx = 2sinx

That is, where tanx = 1/2

So, if t = arctan(1/2) the tangent line is horizontal at

x = t + nπ

**Answer this Question**

**Related Questions**

calculus - Find the points on the curve below at which the tangent is horizontal...

Calculus - Find all points on the graph of the function f(x) = 2 cos x + cos^2 ...

calculus - Find the x-coordinates of all points on the curve f(x) = sin 2x &#...

calculus - Find the points on the curve y= (cos x)/(2 + sin x) at which the ...

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

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

calculus help - Find the points where the tangent line is horizontal or vertical...

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

calculus - dy/dx= (2x-2xy)/(x^2+2y) find all points on the curve where x=2. show...

calculus - dy/dx= (2x-2xy)/(x^2+2y) Find all points on the curve where x=2. Show...