State whether the following statement is true or false :
`f(x)=|x|` has no minimum value.

State whether the following statements are true or false : A ray has no end point.

State whether the following statements are true or false : A line has a definite length.

State whether the following statement is true or false : If x, y both are functions of t, then (d^(2)y)/(dx^(2))=((d^(2)y)/(dt^(2)))/((d^(2)x)/(dt^(2))).

State whether the following statements are true or false : A plane has length and breadth but no thickness.

State whether the following statements are true or false : Line bar(AB) is the same as line bar(BA ) .

State whether the following statements is true or false : '' For two non-empty sets A and B if A subB, then AcapB=A.''

State whether the following statements are true or false : A ray bar(AB) is same as the ray bar(BA) .

State whether the following statement is true or false. The constituent praticles of a material change position during conduction of heat through it.

Examine whether the following statements are true or false: { a }⊂ { a, b, c }

Examine whether the following statements are true or false: { a }∈ { a, b, c }