square
the square
It's a trap.
I believe this question refers to the fact that the partial differential equation that describes heat transfer is classified as a parabolic equation. So you would see these two terms together when people talk about the "parabolic heat equation" (meaning the heat equation, which is a parabolic equation): <math>u_t = k(u_{xx} + u_{yy} + u_{zz})</math>
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Assuming that the 2 in "5x2" is a power (5x2), then no, this is not a linear equation. It is a parabolic equation.
The parabolic heat equation is a type of partial differential equation that describes how a quantity, such as temperature, changes in both space and time. It is typically used to model heat diffusion in a given domain with specified boundary and initial conditions. The equation is of second order in time and usually involves first or second order spatial derivatives.
An equation that is simplified to 0 0 is called a perfect equation. It usually have exactly one solution.
Bar graphs and line graphs do not. Straight line, parabolic, and hyperbolic graphs are graphs of an equation.
It is not an equation because it has no equality sign but it is an expression that can be simplified as: 67+a
The parabolic heat equation is a partial differential equation that models the diffusion of heat (i.e. temperature) through a medium through time. More information, including a spreadsheet to solve the heat equation in Excel, is given at the related link.