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If "x" is positive, "-x" is negative; if "x" is negative, "-x" is positive. Similarly, "x-1" can be positive or negative, depending on the exact value of "x".
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Is -(x) a negative number or positive number?
It is a positive reciprocal. x-a = 1/xa or equivalently, (1/x)a
What is the positive number to the negative power?
It is a positive reciprocal. x-a = 1/xa or equivalently, (1/x)a
Does a negative plus a negative equal a positive?
a negative number plus a negative number is negative. here is a proof.(-x)+(-x)(-1)x+(-1)x-1(x+x)-1(2x)-2xa negative number times a negative number is positive though.
How do you multiply two positive numbers?
Let X = *positive number 1* Let Y = *positive number 2* X times Y
Why does -1 squared equal -2?
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What does a positive number multiplied by a positive number equal?
A positive number multiplied by a positive number will give a positive answer:1 x 1 = 1In contrast, a negative number multiplied by a positive number gives a negative answer:-1 x 1 = -1Finally two negative numbers multiplied together give a positive answer:-1 x -1 = 1
What is the positive number to the negative power?
It is a positive reciprocal. x-a = 1/xa or equivalently, (1/x)a
For any positive integer x how many positive even integers are less than x is it x or x minus 1 or x plus 1 divided by 2 or x minus 1 divided by 2 or x divided by 2?
Given any positive odd integer x the number of positive even integers less than x is given by (x-1)/2.
Which numbers are equal to their squares?
One 0 and 1 0 X 0 = 0 1 X 1 = 1Only positive 1 though.Negative 1 will produce the answer of a positive 1.Solve x = x^2x^2 - x = 0x ( x - 1 ) = 0Has solutions x=0 and x=1
Prove that xy add x add y equals 30 has no positive integer solutions?
First we can solve for y by factoring it out: y(x+1)+x=30, so y=(30-x)/(x+1)= -1+31/(x+1). Let's start by assuming x and y are positive integers and look for a logical contradiction. Since y is positive, the right side (30-x)/(x+1) must be positive. Since x (and therefore x+1) is positive, 30-x must be positive. Therefore x is less than 31. But hold on! Since y is an integer, y+1=31/(x+1) is an integer. Since 31 is only divisible by 1 and 31, y+1 is an integer implies that (x+1) is 1 or 31, making x either 0 or 30. However, x is positive and less 30, which is impossible! There it cannot be the case that x and y are both positive integers.AnswerIt's not as complicated as that. Just add 1 to both sides and factorise, and you get: (x+1)(y+1) = 31. Since 31 is prime, one of its factors must be either 1 or -1. So we'd get x+1=1 (so x=0) or else x+1=-1 (so x=-2), or else y=0 or y=-2. But the question says x and y have to be positive.
-1 divided by X to get positive 4?
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How will you simplify expressions with negative exponents to get positive exponents?
A negative exponent becomes positive in the reciprocal. So if you have a number a^x where x is negative, then, a^x = 1/(a^-x) and, since x is negative, -x is positive.
Does a negative plus a negative equal a positive?
a negative number plus a negative number is negative. here is a proof.(-x)+(-x)(-1)x+(-1)x-1(x+x)-1(2x)-2xa negative number times a negative number is positive though.
What does x to a negative power mean?
It is the inverse of x to the positive value of that power. So x-a = 1/xa or (1/x)a
Why does -1 squared equal -2?
1
What is signum function?
That is a function defined as: f(x) = -1 if x is negative f(x) = 0 if x is zero f(x) = 1 if x is positive In other words, a function that basically distinguishes whether the input is positive, negative, or zero.
How can you go from being negative to being positive?
well: Multiplication: for example... -1 X -1= 1(positive) so a negative times negative is always come out positive. Same thing as dividing too. Example: -x + 2= 0 -x= -2 then buy multiplying by -1 (-x= -2) -1 x= 2 Addition and subtractions: 5- (-2)= because the negative is subtracted it become positive 5 + 2= 7 5 + -2= 3 become positive, because negative 2 is added to a higher positive number. hope this answers your question
