Differential Equations y" + y = tanx, solve this DE - Physics Forums
2015年5月7日 · What does "y" + y = tanx mean in this context? In this context, "y" represents the dependent variable (usually denoted as y(x)) and y represents the derivative of y with respect …
Y=tanx y'=sec^2x does y' also equal to (secx)^2 - Physics Forums
2004年10月6日 · FAQ: Y=tanx y'=sec^2x does y' also equal to (secx)^2 ? 1. What is the relationship between y=tanx and y'=sec^2x? The derivative of y=tanx is y'=sec^2x, which …
Finding the intersection points on the graph y=sinx, y=cosx and …
2015年4月25日 · I'm now struggling with finding the intersection points for where y=cosx and y=tanx cross as well as the points for where y=sinx and y=tanx cross. I know that the points for …
y'''+y'=tan (x) - Math Help Forum
2013年4月29日 · Sure, the equation is y'''+y'=tanx But, that was not what I was asking for : When you integrate it, what do you obtain ?
Solve Initial-Value Problem: Find Interval x=0 - Physics Forums
2009年10月16日 · Homework Statement Find an interval centered about x = 0 for which the given initial-value problem has a unique solution. y^{''} + (tanx)y = e^{x} y(0) = 1 y^{'}(0) = 0 …
Finding the exact value of sec^2x - Physics Forums
2011年10月20日 · Homework Statement The curves y=cosx and y=tanx intersect at point P whose x coordinate is \\alpha a) show the curves intersect at right angles at P. b) show that …
Solving tan x = x: A Numerical Method - Physics Forums
2009年11月10日 · You can also assume that the equations are y=tanx and y=x, because that is how you find the intersection of lines right? Then, you can solve the equation graphically. …
[SOLVED] Optimization; point closest to. | Math Help Forum
2009年11月15日 · Find, correct to two decimal places, the coordinates of the point on the curve y=tanx that is closest to the point (1,1). So first i found d^2 = (x-1)^2 + (y-1)^2 so f(x) = (x-1)^2 …
Volume of Revolution with tan(x) - Physics Forums
2013年8月5日 · Homework Statement Let R be the region between y=tan(x) and the x-axis from x=0 to x=pi/2. Find the volume of the solid formed when R is revolved around the y …
Projectile Equation - Parabola - Physics Forums
2012年6月24日 · A user asks about the use of calculus in solving projectile problems using the equation y=xtanθ - gx 2 /2u cos 2 θ. Other users explain the partial derivatives and optimal …