and are two real numbers. Read the following statements about them.
If and none of them are equal to zero, then .
. The equation holds for all real numbers .
. is always a real number.
Which of these statements are true?
Details and assumptions:
The statements are independent. That means if according to statement , ; it applies to statement only.
This problem is from the set "MCQ Is Not As Easy As 1-2-3". You can see the rest of the problems here.