Discover Questions

Explain how deductive reasoning ís used to show that a conditional is true or false.? Is this correct? xy/(x^2+y^2) is the same as (xy)(x^2+y^2) ? Is it possible for the thyroid to go from underactive 1 month and back to normal the next without taking medication? Describe events that follow contact of a spermatozoon with an egg. What is polyspermy and how is it prevented? Prove that the tangent line to the curves 4y^3-x^2y-x+5y=0 and x^4-4y^3+5x+y=0 at the origin are perpendicular?