Functions (26 16:51:57) If f (x) = 1 + logx3, G (x) = 2logx2, try to compare the size of FX and GX

Functions (26 16:51:57) If f (x) = 1 + logx3, G (x) = 2logx2, try to compare the size of FX and GX

In the triangle ABC, if a = 18, B = 22, and a = 45 degrees, then the solution of B is_______ (fill in no solution, one solution or two solutions)

Sine theorem, a: sin45 = B: SINB

Suppose that the profit of selling a and B commodities is p million yuan and Q million yuan respectively. The relationship between them and the invested capital x million yuan has the following empirical formula: P = 1 / 10x, q = 2 / 5?

p=x/10,q=2√x/5,
The investment of Party B is x 10000 yuan, and that of Party A is 90-x 10000 yuan
Profit f (x) = P + q = (9-x) / 10 + 2 √ X / 5
=-x/10+0.4√x+0.9
=(-x+4√x-4)/10+1.3
=1.3-(√x-2)^2/10

How to calculate 0.87 times 7.13 plus 8.7 times 0.187 plus 0.87 in a simple way?

0.87 times 7.13 plus 8.7 times 0.187 plus 0.87
=0.87*7.13+0.87+1.87+0.87
=0.87*(7.13+1.87+1)
=0.87*10
=8.7

Lim 1 / N (sin π / N + sin 2 π / N +. + sin n π / N) n tends to be positive infinity

See picture

Given the set a = {x | x is greater than or equal to 2 and less than or equal to 4}, B = {x | x is greater than a and less than 3A}, if a is really included in B, the value range of a is obtained

a

Calculation. (- 53) + (- 21) - (- 79) - (- 37)

Let the tangent of the curve y = AX2 at point (1, a) be parallel to the straight line 2x-y-6 = 0, then the value of a is______ ．

Y '= 2aX, then the slope of the tangent k = y' | x = 1 = 2A, ∵ the tangent is parallel to the straight line 2x-y-6 = 0 ∵ 2A = 2 ∵ a = 1, so the answer is 1

The square of the solution to the inequality x with respect to X - (2a + 1) x + 2A ≥ 0 (a ∈ R)

(2a + 1) / 2 is the axis of symmetry and is drawn in the coordinate system
It can be seen from the figure that when the discriminant is greater than 0, a, X ∈ R is discussed
When the discriminant is equal to 0, the value of a and the solution of X are obtained, and X is not equal to the solution
The same goes for the following

640 minus 562 is calculated in vertical form and checked

640
- 562
————
seventy-eight
seventy-eight
+562
————
six hundred and forty