What is the remainder of (3^x) when divided by 2. (x is a positive integer)
The remainder is 1. In this case, since we are dividing by 2, the only possible option is 0 or 1. Since 3 or any power of it is only an odd number, remainder is 1
What is the physical meaning of value obtained after integration
After integration, we get the area under the graph and x-axis (if integrated wrt x).
What does a Differential equation be used to represent
A differential equation can be used to represent a family of curves. For example, family of all straight lines passing through origin (or any other point)