Who knows that if the following definition is set: int a = 2, B = 3, C = 4, then the expression with the value of 0 is: There are four options: A.a==1)&&(!b==0) B.a C.a&&b D.a||(b+b)&&(c-a)

Choose a
Here we look at the logical operators in expressions
So understand the meaning of & and |
&&: the value of the whole expression is true only when the left and right expressions are true, otherwise it is false (0)
||: if the left and right expressions are false, the value of the whole expression is false, otherwise it is true
In C language, the criterion to judge whether an expression is true is that 0 is false and non-0 is true
therefore
A (! A = = 1) & (! B = = 0) is (! 2 = = 1) & (! 3 = = 0) 2 is negated (if it is 0000 0010, it is 1111 1101). Obviously, it can't be equal to 1 & & if the left side is false, then the value of the whole expression must be false, that is 0. So choose a
C A & & B is about 2 & & 3 is true, the whole expression is true, that is 1
D a | (B + b) & amp; (C-A) is that 2 | (6) & 2 is all true, so the expression is also true, which is also 1

Let a = 3, B = 2, C = L, then the value of the expression a = b > C is

In VB language, the value is false, or 0. A is obviously not equal to B
However, in most other languages, the value should be true, or 1. B > C is true, when assigning true to a
Because in many languages "=" is the assignment symbol, and "=" is the equal symbol. In VB "=" is the assignment symbol, and it is also equal

Let a = 1, B = 2, C = 3, d = 4, then the expression a

The formula is equivalent to a

A rectangle has a circumference of 146 cm and a width of 28 cm. How many meters is its length

Let the length be x cm
2*(28+X)=146
28+X=73
X=73-28
X=45
The length is 45 cm

1 + A + a (a + 1) + a (a + 1) square = (1 + a) [1 + A + a (a + 1)] = (1 + a) square (1 + a) = (1 + a) cube
Try to use this method to decompose factor 1 + A + a (a + 1) + a (a + 1) square + +A (a + 1) 2011 power

1+a+a(a+1)+a(a+1)^2+…… +a(a+1)^2011=(a+1)(1+a+a(a+1)+a(a+1)^2+…… +a(a+1)^2010)=(a+1)^2(1+a+a(a+1)+a(a+1)^2+…… +a(a+1)^2009)=…… =(a+1)^2011(1+a)=(a+1)^2012

What is the definite integral ∫ x [f (x) + F (- x)] DX
Let me ask the definite integral ∫ x [f (x) + F (- x)] DX =; where the upper and lower limits of the integral are a and (- a) respectively

G (x) = x (f (x) + F (- x)) is an odd function
The integral of odd function on symmetric integral limit is zero

Write five words similar to the meaning of the image
Be accurate
Choose two words to make sentences

As if, as if, similar, close, seemingly, suspected,

How to calculate that the volume of a cone is 16 cm less than that of a cylinder rising at the same height as it. What is the volume of this cone

In other words, the volume of a cone is one part, the volume of a cylinder is three parts, and the volume of a cylinder is two parts more than that of a cone

Use 7 7S to make 4 numbers, add the operation symbol to make the result equal to 100______ ．

According to the stem analysis, we can get: 777 ／ 7-77 ／ 7, = 111-11, = 100, so the answer is: 777 ／ 7-77 ／ 7 = 100

Given x + y = 5, xy = 2, a + B = 3, ab = 3, M = ax + by, n = ay + BX, find the value of N / M + m / n

Given x + y = 5, xy = 2. A + B = 3, ab = 3, M = ax + by, n = ay + BX, find the value of N / M + m / N A ^ 2 + B ^ 2 = 3x ^ 2 + y ^ 2 = 21mn = AB (x ^ 2 + y ^ 2) + (a ^ 2 + B ^ 2) xy = 3 * 21 + 3 * 2 = 69m ^ 2 + n ^ 2 = (a ^ 2 + B ^ 2) (x ^ 2 + y ^ 2) + 4abxy = 3 * 21 + 4 * 3 * 2 = 75n / M + m / N = (m ^ 2 + n ^ 2) / (MN) = 25 / 23

Who knows that if the following definition is set: int a = 2, B = 3, C = 4, then the expression with the value of 0 is: There are four options: A.a==1)&&(!b==0) B.a C.a&&b D.a||(b+b)&&(c-a)