Let f' (x) > 0
0 & lt2-4/x？
4/x？ & lt2
x？ & gt2
X & lt-√2 or x & gt√2.
Monotone subtraction (0, √2)
Monotonic increase
When the straight line L is perpendicular to AB and D is the largest, then k (AB) = (4-1)/(1+3) = 3/4.
So the slope k of the straight line L =-1/(3/4) =-4/3.
That is, the equation of the straight line L is y- 1=-4/3(x+3), that is, y=-4/3x-3.
Let the linear L equation be y- 1=k(x+3), that is, there is d=|4k-4+ 1|/ root sign (1+k 2) = 4.
(4k-3)^2= 16( 1+k^2)
16k^2-24k+9= 16+ 16k^2
24k=-7
k=-7/24
Therefore, the linear l equation is y =-7/24 (x+3)+1=-7/24x+1/8.
Senior one mathematics, 13, 16 problem solving process, thanks to 13, because the function is an even function,
∴f(-x)=f(x)=x∧2-(m+2)x+3=x∧2+(m+2)x+3
-(m+2)x=(m+2)x
-m-m=2+2
∴m=-2
Solve math problems 3 and 4 in senior one, * _ * Thank you! The third problem is B. First, the set B must satisfy 0; 0, 1 in set b can be regarded as 2 with the base of log 2, and because the base of log is 2, he is a increasing function, so X-2 < 2, and b = {x | 2.
The fourth question c, first understand that y=sin(2x-π/6) is translated into y=sin2x, then y=sin(2x-π/6) should be like this. Y = sin (2 (x+π/12)-π/6) = sin2x shifts to the left according to left plus right minus.
I have typed hard, I hope it will be useful to the questioner.
Thank you. There are too many math answers in senior one. I can't see them clearly. I'd better study hard and do it myself
Mathematics problem solving+problem solving steps in senior one. Fill in the blanks11.12.13 Thank you. You can ask the teacher.
Solve the math problem of senior one! Thank you ∵ f (3) = 1-8+6 =- 1 < 0.
f(4)=log3(4)-8+8=log3(4)>0
∴ f (zero point ∴f(x) must be within the interval (3,4).
Choose B.
I hope my answer is helpful to you. Take it, O(∩_∩)O!
Solving this equation is always > 2, and there is no real root.