The C language expression equivalent to integral mathematical expression AB / (a + b) is

The C language expression equivalent to integral mathematical expression AB / (a + b) is

(a*b)/(a+b)

The corresponding C language expression of mathematical expression is "x * y / (x ^ 2 + y ^ 2)". What's wrong

^In C language, it is no longer a power operation, but a binary bit operation, representing XOR
So this expression should be written as "x * y / (x * x + y * y)"

What is the C expression that represents the relational expression "x ≥ y ≥ Z" in mathematics? Please help with C language

The correct expression is: (x > = y) & (Y > = z) or x > = y & & Y > = Z
We should pay attention to the following points
1. Priority of operators: the priority of relational operators is higher than that of logical operators
2. Combination: from left to right
3. Number of operation objects: all are binocular operators
4. Result of expression: true or false, that is, 0 or 1
In addition, it should be noted that only when x > = y is true, you need to judge the value of Y > = Z, that is, when x > = y is false, the following operations will not be performed

Write the C language expression of the mathematical formula X / y + Z

#include
#include
#include
int main()
{
float x,y,z;
x=2;y=3;
z=4;
printf("%f",x/y+z);
return 0；
}

Mathematical expression 0

(x>=0) & (x

Write the values of the following mathematical expressions in C language:
A (the second power of x) + BX + C
（a+b）/(a-b)
A + b * (the root of C)

a*x*x+b*x+c
（a+b）/(a-b)
a+b*sqrt(c)

A mathematical interest group measured the height of the tree and the shadow length of the tree AB by using the shadow

The ratio of the length of the pole to the shadow length of the pole is equal to the ratio of the height to the shadow length of the tree

The mathematics interest group measured the height of a big tree. First, it measured that the shadow length of the tree was 5 meters. At the same time, it also measured that the height of a small tree nearby was 1.8 meters and the shadow length was 0.8 meters

At the same time, the height of the tree is in direct proportion to its shadow length
The height of the tree is x M
x：5=1.8:0.8
0.8x=1.8x5
0.8x=9
x=11.25

As shown in the figure, when the sun is at an angle of 30 ° with the horizontal ground, the shadow length of a tree is 24m, then the height of the tree is ()

As shown in the figure, when the sun is at an angle of 30 ° with the horizontal ground, the shadow length of a tree is 24m, then the height of the tree is (8 √ 3M) height = 24 × 1 ÷ 3 = 8 √ 3M; Hello, I'm glad to answer for you, skyhunter 002 will answer for you

A mathematical interest group measured the height of tree by using tree shadow, as shown in figure (1). It has been measured that the shadow length AC of tree AB is 12 meters, and the angle between the sun light and the ground is 30 degrees. (2 ≈ 1.4,3 ≈ 1.7) (1) calculate the height AB; (2) due to soil erosion, tree AB falls along the direction of the sun light, and the length of tree shadow changes during the toppling process, Assuming that the angle between the sun and the ground remains unchanged (as shown in Fig. (2)) (1) finding the shadow length of a tree at an angle of 45 ° to the ground; (2) finding the maximum shadow length of a tree

(1) According to the question, the shadow length is 12, and the tree height is 12 * 1.7/2 = 10.2
(2) (1) when the tree is 45 ° to the ground, the distance between the top of the tree and the ground is 10.2 / 1.4 = 7.14
From the left vertical line at the top of the tree to the ground, D is 7.14 d from the root to the ground and 7.14 * 1.7 = 12.138 from the end of the shadow
So the shadow is 7.14 + 12.138 = 19.278
② Find the maximum shadow length of the tree. When the tree falls down, the movement track of the top of the tree is an arc. Suppose the angle between the tree and the ground is x when the shadow is the longest
Then the tree shadow length = 10.2 * cos x + 10.2 * SiN x * 1.7, and the maximum value of this formula is 19.839 according to the trigonometric function