CHILD DEVELOPMENT PEDAGOGY

Detailed explanation-1: -A function is a relation which describes that there should be only one output for each input (or) we can say that a special kind of relation (a set of ordered pairs), which follows a rule i.e., every X-value should be associated with only one y-value is called a function. For example: Domain. Range.

Detailed explanation-2: -A function is a relation between sets where for each input, there is exactly one output.

Detailed explanation-3: -For a function, the input is called the independent variable, and the output is called the dependent variable . This is because the output depends on the input.

Detailed explanation-4: -Definition. A function f is even if the following equation holds for all x and −x in the domain of f : f(x)=f(−x) f ( x ) = f ( − x ) Geometrically, the graph of an even function is symmetric with respect to the y-axis, meaning that its graph remains unchanged after reflection about the y-axis.

Detailed explanation-5: -An injective function (injection) or one-to-one function is a function that maps distinct elements of its domain to distinct elements of its codomain. Formally, it is stated as, if f(x) = f(y) implies x=y, then f is one-to-one mapped, or f is 1-1.