How to Treat Anxiety Naturally. 1  Separation Anxiety: âRelieving Anxiety,â August 2001, and âLearning To Be Alone,â July 2001. 2  Noise Phobias: âWhen the Thunder Rolls, â April 2000, and âBring In Da Noise,â May 2000. 3  Fears, Anxieties and Phobias: Reducing Your Dog's Anxieties, April 2007.
A formula is a special type of equation that shows the relationship between different variables. A variable is a symbol like x or V that stands in for a number we don't know yet. Example: The formula for finding the volume of a box is: V stands for volume, l for length, w for width, and h for height.
Solving $x+1=3$ means finding a value for $x$ that satisfies the equation $x+1=3$. In this case, $x=2$ does the job because $2+1=3$. Now, given a differential equation such as: $\frac{dy}{dx}= 2x$ ..........(1). a solution to this equation is a function (call it $y(x)$). Of course not any function will do.