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FUNCTIONS f1, References: - Coggle Diagram
FUNCTIONS 
Types Of Functions
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Constant Function Function
defined from x→Y . All elements of set X match one and constant element of set Y.
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Graph Of the Constant Function
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Linear Function
Function defined from set x→x.f(a)=ma+n (m,n ∈R and m≠0)
Graph Of The Linear Function
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Equal Function
Let f and h be two functions defined from X to Y. Then f(a)=h(a) for all elements of X. f=h
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One to One Function(1-1)
Each element in the domain match with different than other elements of domain.
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General Rule
Image of each element in the domain is different than other element of domain. Horizontal Line Test To understand whether a graph shows a one-to-one function, horizontal lines draw parallel to the x-axis. If lines intersect just one point on the graph it is a "one-to-one" function.
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Operations On Function
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