What are the steps to obtain the derivative of r = ? / ?. My answer key shows dr = 1/? d?.
M MAC-A-TAC New member Joined Jan 9, 2009 Messages 31 Jan 9, 2009 #1 What are the steps to obtain the derivative of r = ? / ?. My answer key shows dr = 1/? d?.
G galactus Super Moderator Staff member Joined Sep 28, 2005 Messages 7,216 Jan 9, 2009 #2 You can use the quotient rule. r=θπ\displaystyle r=\frac{\theta}{\pi}r=πθ dr=π⋅dθ−θ(0)π2=dθπ\displaystyle dr=\frac{{\pi}\cdot d{\theta}-{\theta}(0)}{{\pi}^{2}}=\frac{d{\theta}}{\pi}dr=π2π⋅dθ−θ(0)=πdθ
You can use the quotient rule. r=θπ\displaystyle r=\frac{\theta}{\pi}r=πθ dr=π⋅dθ−θ(0)π2=dθπ\displaystyle dr=\frac{{\pi}\cdot d{\theta}-{\theta}(0)}{{\pi}^{2}}=\frac{d{\theta}}{\pi}dr=π2π⋅dθ−θ(0)=πdθ
F fasteddie65 Full Member Joined Nov 1, 2008 Messages 360 Jan 10, 2009 #3 Remember that ? is a constant. d/dø (kø) = k dø I am using ø instead of theta, because I don't know how to type theta.
Remember that ? is a constant. d/dø (kø) = k dø I am using ø instead of theta, because I don't know how to type theta.
G galactus Super Moderator Staff member Joined Sep 28, 2005 Messages 7,216 Jan 10, 2009 #4 Try LaTex, eddie. It's easy. π, ϕ, gamma, δ, ξ, η\displaystyle {\pi}, \;\ \phi, \;\ gamma, \;\ \delta, \;\ \xi, \;\ \etaπ, ϕ, gamma, δ, ξ, η. Click on 'quote' to see the code. Nothing to it. Me, I do not know how without it.
Try LaTex, eddie. It's easy. π, ϕ, gamma, δ, ξ, η\displaystyle {\pi}, \;\ \phi, \;\ gamma, \;\ \delta, \;\ \xi, \;\ \etaπ, ϕ, gamma, δ, ξ, η. Click on 'quote' to see the code. Nothing to it. Me, I do not know how without it.
