If a = 6, B = 4, C = 5, then the value of the expression a & & B + C | B = = 2 / C is? Mainly how to calculate!

If a = 6, B = 4, C = 5, then the value of the expression a & & B + C | B = = 2 / C is? Mainly how to calculate!

Given a = 2, B = 3, C = 4, d = 5, the expression! A

Expression error, can't evaluate directly!
Should be:
!a

If the parabola y = 2x2-1 is shifted 1 unit to the left and 4 units to the up, then the new parabola is______ ．

If the vertex of the original parabola is (0, - 1), one unit to the left and four units to the up, then the vertex of the new parabola is (- 1,3); let the analytic formula of the new parabola be y = 2 (X-H) 2 + K, and substitute y = 2 (x + 1) 2 + 3

Is integer multiplied by integer equal to fraction or is integer divided by integer equal to fraction

Answer: integer times integer must be integer
Dividing an integer by an integer may be a fraction, such as 100 / 40 = 5 / 2, or an integer, such as 100 / 4 = 25
Divisible is an integer and divisible is a fraction

Is 1 divided by x a monomial

No, 1 divided by X is a fraction, not an integer, so it's not a monomial

Questions about Green's formula in calculating area
Recently, I reviewed Green's formula,
I'm puzzled by the treatment of finding area in it. He treated it like this, let P = - y, q = x, and get $$DXDY = (1 / 2) $XDY YDX. Further, let P = 0 get a = (1 / 2) XDY or q = 0 get a = (1 / 2) - YDX. He said that these two formulas can be used to find area directly in the future
My questions are as follows:
1. According to my understanding, PQ can be calculated according to your own wishes, isn't it?
2. If it is, if I let P = 2x, q = y, I can also get $$DXDY. In principle, I can also calculate the area. But the result is obviously different from the above standard method. Why?
Others have gone to Wuhan to review. I'm fighting alone here. I don't understand some things. I really can't help it. Take a closer look, talk about, or talk about the second or third question of 10-3 in advanced mathematics. According to what formula do I choose to calculate the area!

Yes, you can choose by yourself. As long as you can find out the boundary integral of the double integral of the closed domain, you don't have to multiply by half. Of course

How to calculate the mass of an object according to the density formula

Density is represented by ρ, m by mass and V by volume. The formula for calculating density is ρ = m / V; under transformation, M = ρ v

3 and 1 / 4 + 99 times 3 and 1 / 4

3 and 1 / 4 + 99 times 3 and 1 / 4
=3 and 1 / 4 * 1 + 99 times 3 and 1 / 4
=3 and a quarter * (1 + 99)
=3.25*100
=325

If the focus of the parabola y2 = 4x is f, the directrix is l, and the point m (4, m) is a point on the parabola, then the circle passing through the points F, m and tangent to L has ()
A. 0 B. 1 C. 2 d. 4

Because the point m (4, m) is on the parabola y2 = 4x, M = ± 4 can be obtained. Because the circle passes through the focus F and is tangent to the collimator L, the definition of the parabola shows that the center of the circle is on the parabola. And because the circle passes through the point m on the parabola, the center of the circle is on the vertical bisector of the line FM, that is, the center of the circle is the vertical bisector of the line FM and the parabolic line

A cylinder, a cuboid and a cone. If their base area and volume are equal, then the height of the cylinder is equal___ The height of a cuboid and a cone is the height of a cylinder___ ．

Because the height of the cylinder = vs, the height of the cuboid = vs, the height of the cylinder with the same bottom area and volume is equal to the height of the cuboid; because the height of the cone = 3vs, the height of the cone is three times the height of the cylinder. Answer: the height of the cylinder is equal to the height of the cuboid, and the height of the cone is three times the height of the cuboid