Sun The sun is the center of the solar system, it is a star, a hot ball of glowing gases. Supply To furnish organs, tissues or cells with a vital element as blood or never fibers. Support To keep going, to uphold. Surroundings The circumstances, conditions or objects by which one is surrounded.
1. Solving Differential Equations (DEs). A differential equation (or DE) contains derivatives or differentials. Our task is to solve the differential equation. This will involve integration at some point, and we'll (mostly) end up with an expression along the lines of  y = ....
A differential is the result gained when mathematical differentiation is applied to a function.  Differentiation in maths is the function which finds the gradient of a funct â¦ ion in terms of x. Differentiation in biology is the specialisation of unspecialised cells such as stem cells into active cells.