Equation of Plane Through Origin & Perpendicular to Vector (1,-2,5) • Physics Forums

ineedhelpnow · 2014-08-20T21:57:00+00:00

find the equation of the plane through the origin and perpendicular to the vector (1,-2,5). this is the only relevant equation i have found $a(x-x_0)+b(y-y_0)+c(x-x_0)=0$

Thread 'How to Find Critical Points of function f(x,y,z)'

Hi everybody If we have not any answers for critical points after first partial derivatives equal to zero, how can we continue to find local MAX, local MIN and Saddle point?. For example: Suppose we have below equations for first partial derivatives: ∂ƒ/∂x = y + 5 , ∂ƒ/∂y = 2z , ∂ƒ/∂z = y As you can see, for ∇ƒ= 0 , there are not any answers (undefined)

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MHB Equation of Plane Through Origin & Perpendicular to Vector (1,-2,5)

Thread 'How to Find Critical Points of function f(x,y,z)'

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