13 kg is equivalent to a few parts of a ton 26 milliliters is equivalent to a few parts of a liter Seven centimeters is equal to a fraction of a meter 40 ml is equal to a few parts of a meter

13 kg is equivalent to a few parts of a ton 26 milliliters is equivalent to a few parts of a liter Seven centimeters is equal to a fraction of a meter 40 ml is equal to a few parts of a meter

13kg = 13 / 1000t
26 ml = 13 / 500 L
7 cm = 7 / 100 m
40mm = 2 / 5m

Given the function f (x) = √ x + 5 + 1 / x + 2, find the values of F (- 3), f (2 / 3), f (A-1) (a > 0);
((2) find the range of y = 2x + 1, X ∈ {1,2,3}
(3) Find the range of y = x & # 178; + 2x, X ∈ [- 2,2]
(4) Finding the range of y = 2x + 1 / X-1

It is required that f (a) directly replace x with a to get: √ (a + 3) + 1 / (a + 2)
f(a-1)=√(a-1+3)+1/(a-1+2)=√(a+2)+1/(a+1)
Note: I do the original question as √ (x + 3) + 1 / (x + 2)

The solution of equation (x-3) (x + 2) + 18 = x (x + 1) is

(x-3)(x+2)+18=x(x+1)
x²-x-6+18=x²+x
x+x=12
2x=12
x=6

（-cos10º·sin30º）÷（cos10º·tan45º）=?

-0.5

When x = - 3, the value of the algebraic formula ax ^ 5 + BX ^ 3 + cx-8 is 6. When x = 3, find the value of the algebraic formula ZX ^ 5 + BX ^ 3 + cx-8

When x = - 3, the value of the algebraic expression ax ^ 5 + BX ^ 3 + cx-8 is 6
f(x)=ax^5+bx^3+cx-8
f(-x)=-ax^5-bx^3-cx-8=-(ax^5+bx^3+cx-8)-16
f(x)+f(-x)=-16
Substituting x = 3, f (x) = 6
f(-x)=f(-3)=-16-f(x)=-16-6=-22

X+X×X=56 (X+2)-(X×X+7)=-45 X+a=105 X=?a=?

x=7
a=98

What is Tan 30 ° + cos 30 ° / Tan 45 ° - cos 60 ° equal to

tan30+cos30/tan45-cos60
=√3/3+(√3/2)/1-1/2
=(5√3-3)/6

The analytic formula of quadratic function is y = f (x) = 4x2 + 5x

The analytic expression of quadratic function is: y = f (x) = 4x2 + 5x is f (x) = 4x & sup2; + 5x
2 in "4x2" should be "quadratic", and 2 should be the superscript of the letter "X"
Sometimes people forget to mark, sometimes forget to save

If the point P (a + B, a-b) is shifted 2 units to the right and 4 units to the upper, the coordinates of the point obtained are (3,3), then the point (a, b) is in the () x quadrant?

If the point P (a + B, a-b) is translated 2 units to the right and 4 units to the upper, the coordinates of the point obtained are (3,3), then the point (a, b) is on the positive half axis of Y axis
∵a+b+2=3,a-b+4=3
∴a+b=1,a-b=-1
∴a=0,b=1
The point (0,1) is on the positive half axis of Y axis

Find the monotone interval of the following function: F (Χ) = - Χ & sup2; + 2|Χ + 3

When x0, f (x) = - Χ & sup2; + 2x + 3 = - (x-1) ^ 2 + 4 draw an image, which is symmetrical about x = 1, so it increases at (0,1] and decreases at (1, + ∞)