Posted by **donovan** on Monday, February 7, 2011 at 11:51am.

Help with this please. I have to form the contrapositive of each and simplify negation using DeMorgan's rules.

a) a->(b or c)

my answer:

contra(~b or~c)->~a

simplified: ~b and ~c->~a

b) (A and B)->(~q)

my answer:

contra (~A or~b)->q

simplified:~a or ~b->q

Am i even close?

## Answer this Question

## Related Questions

- math - Need help with negation using demorgan law. ~(a and ~b) I have ~a and b ...
- Geometry - In logic, which of the following is said to be logically equivalent ...
- Math - Let p -> q represent the conditional statement All hummingbirds love ...
- discrete mathematics - problem has to do with three valued logic, ie the values ...
- Math! Please Help! - 1. What is the simplified form of (–3x^3y^2)(5xy^–1)? I ...
- math - simplify the expression if possible. IN e^5. Type an exact answer in ...
- logic - I need help proving these arguments using rules of inference, please. (S...
- math-logic(shsat) - Question: If 15 - 2x < 7, then for all possible values of...
- Math - Can someone please help me with these two. What is the quotient (6-x)/(x^...
- Math 222 - Using the Rules of Exponents. Please show me how to simplify each ...