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What are the factor pairs of NEGATIVE numbers?
The numbers are the same as positive numbers, just the signs change. Write out the factor pairs as if the number were positive, but make one of the numbers positive and one negative. Now write the same pairs over again and reverse the signs. Negative numbers have twice as many factor pairs as positive numbers do.
How do you write a program to print Inverse number in PHP?
There are two types of inverse numbers in this context: additive and multiplicative. An additive inverse number is a number that's had its sign flipped: positive becomes negative, and negative becomes positive. The PHP code for this would be: $result=-$number; A multiplicative inverse number is a number that's been divided into 1. So 5 becomes 1/5, and 1/5 becomes 1/1/5, or 5. The PHP code for this would be: $result=1/$number;
Input a number and find whether it is positive or negative?
Placing a question mark at the end of a statement does not make it a sensible question. Try to use a whole sentence to describe what it is that you want answered.Yes, it is possible to input a number and find whether it is positive or negative. Yes, it is possible to write an algorithm to do that. But what is it that you want?
2 Write a program to convert a 2-digit BCD number into hexadecimal?
WRITE A PROGRAM TO CONVERT A 2-DIGIT bcd NUMBER INTO HEXADECIMAL
The square root of a negative value is called an imaginary or number?
Yes. The letter i denotes the value of the "positive square root" of -1. So i² = -1. But also (-i)² = -1 as well. Remember that for every number there is a "positive" and "negative" square root. So if you want the square root of -4, you can do this: -4 = (-1)(4). So sqrt(-4) = sqrt[(-1)(4)] = sqrt(-1)*sqrt(4) = i*2 or -i*2. We usually write these as 2i and -2i.
