Wednesday, August 14, 2013

IGCSE MATHEMATICS TOPIC : Solving Simple Differential Equations

Simple differential equations take the formWe have to solve the equation to findas a function ofWe do this by putting all the 's on the right and integrating. Normally when we integrate we have to add a constant. We can find the value of this constant if we are told a point on the curve.
For example, dy overThe pointlies on the curve. Findas a function of
We now have to find C. We are told in the question that y=0 when x=5. Hence




Example: The point lies on the curve. Find y as a function of x.
We now have to find C. We are told in the question thatwhenHence



ExampleThe pointlies on the curve. Findas a function of
We now have to find C. We are told in the question thatwhenHence

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