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#### ranga519

##### New member

- May 19, 2018

- 5

**be a function from a set X to a set Y, moreover, A ⊆ X. What comparison sign canput instead? to assert "**

*f***^(−1) (f(A)) ? A" become true? (Possible signs of comparison in this : ⊆, ⊇, =. It is necessary to take into account all options.**

*f***^(−1) - inverse of fall options.), Let f be a function from a set X to a set Y, moreover, A ⊆ X. What comparison sign canput instead? to asserte-one(f (a))?become true? (Possible signs of comparison in this and the following two problems: ⊆, ⊇, =. It is necessary to take into accountall options.)**

*f*