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Anonymous users2024-02-11(1) If the point m(m,-2) is on the parabola, -2=m2-4m+3, m2-4m+5=0, =(-4)2-4 1 5=-4 0, this equation has no real solution, and the point m(m,-2) will not be on the parabola;
oa=1，ob=3，ab=2
y=x2-4x+3
y=（x-2）2-1，c（2，-1），ah=bh=ch=1
In RT AHC and RT BHC, from the Pythagorean theorem, AC=,BC=,AC2+BC2=AB2, ABC is an isosceles right triangle;
3) There is such a point p
According to the quadrilaterals bisected by the diagonals are parallelograms, so the line segment connecting the point p and the point c should be bisected by the x-axis, the ordinate of the point p is 1, the point p is on the parabola y=x2-4x+3, when y=1, that is, x2-4x+3=1, the solution is x1=-2, x2=+2, and the coordinates of the point p are (-2,1) or (2,1).
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Anonymous users2024-02-10Assuming that there is a point p, satisfying the topic, let p(x,x -4x+3), d(a,0) the quadrilateral with b, c, d, p as vertices is a parallelogram, then x=a+1, x -4x+3=-1, using the root formula, x=2 2 2
a=1±2√2
When d(1 2 2,0), there is a point p(2 2 2,-1), such that a quadrilateral with b, c, d, p as vertices is a parallelogram.
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Anonymous users2024-02-09For (3): Let m(m,0), p(x,y) where y=x2-4x+3. then there is BC, (m-x) 2+(x-1) 2(x-3) 2=pc 2
solution, x-m=x 2-4x=3Synapult, (m-x) 2+(x-1) 2(x-3) 2=pc 2=2
When x2-4x+3=1,x=1 2 2d(1 2 2,0) exists, there is a point p(2 2 2,-1), so that the quadrilateral with b, c, d, p as vertices is a parallelogram.
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Anonymous users2024-02-08Since the integrand is in the range 1 to 3 >> 0, i1
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Anonymous users2024-02-07The answer of a162150=15 b=163150=16 c is incomplete.
Answer A Because the number of 162150 per swift potato adds up to 15 mu, 15 can be divisible by the argument. If you don't believe it, verify it yourself. begging
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Anonymous users2024-02-06These numbers form a drawback hole with a tolerance of 3, and the first term is 102, and the last term is 999
Number of items: (999-102) Rental source dry 3 +1=300 items.
Sum = (102 + 999) * 300 2 = 165150
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Anonymous users2024-02-0510% discount is 90% of the original price.
The price increase of 1 becomes a 10% increase on the basis of the original price, that is, the price increase is 6*
It's the distance between the two straight lines of OA and DB, and when x is the same, the top minus the bottom is equal to 1000 >>>More
f(x)=(ax+b) (x +1), in (- is the odd function.
f(-x)=-f(x)..or f(0)=0=>b=0]>(ax+b) (x +1)=-(ax+b) (x +1)>(ax+b)=-(ax+b). >>>More
, the square is sin2x=-24 25,(sinx-cosx) 2=49 25,-pi 20,sinx-cosx<0,sinx-cosx=-7 5 >>>More
If A makes 1 2 of the total number of the other three, then A accounts for 1 3 of the total (this can be understood), B makes 1 3 of the total number of the other three, then B accounts for 1 4 of the total, C accounts for 1 4 of the total number of the other three, then C accounts for 1 5 of the total, and D accounts for 1-(1 3 + 1 4 + 1 5) = 13 60 >>>More
As can be seen from the figure, there are 50 people who choose **1, 150 people who choose **2, and 100 people who choose **3. >>>More