Input a positive integer NL into a machine to generate n (n + 1) / 2 digits. If the number generated by input a is A1; the number generated by input A1 is A2;; and so on. Now a = 2, A2010 =?

Input a positive integer NL into a machine to generate n (n + 1) / 2 digits. If the number generated by input a is A1; the number generated by input A1 is A2;; and so on. Now a = 2, A2010 =?

a = 2
a1 = 2*3/2 = 3
a2 = 3*4/2 = 6
A3 = 6 * 7 / 2 bits = 1
a4 = 1*2/2 = 1
a5 = 1*2/2 = 1
……
A3 and later a [i] are equal to 1
a2010 = 1

The coefficient of the monomial - π A is (). The square of the polynomial a - 2Ab + 3AB is ()
The degree of the square of polynomial a - 2Ab + 3AB is ()

The coefficient of the monomial - π A is (- π). The square of the polynomial a - 2Ab + 3AB is (quadratic trinomial)

Let f (x) = xsinx + cosx and the slope of the tangent line at the point (T, f (T)) be K, then the partial image of the function K = g (T) is K

According to the meaning of the title
g(t)=(f(t))'=sint+x*cost-sint=x*cost
First, G (T) must be an odd function;
Then we can use matlab to draw its image
The specific program code is as follows:
》x=-2*pi:pi/10:2*pi;
》y=x.*sin(x);
》plot(x,y)

If a + B = 3, ab = 1.25, then a & # 178; - B & # 178=

Answer: a + B = 3: the square of: (a + b) the square: (a + b) \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\178; = (a + b) (a-b) = 3 (a-b)

In the plane rectangular coordinate system, the coordinate of point a is (4,0), point P is on the straight line y = - x + m, and AP = OP = 4. Find the value of M

As shown in the figure, when the point P is in the first quadrant, OM = 2, Op = 4. In RT △ OPM, PM = op2-om2 = 42-22 = 23, (4 points) ∵ P (2, 23) ∵ point P is in y = - x + m, ∵ M = 2 + 23. (6

14.8-9.8 = 1.4x-9 (solution equation)

14.8-9.8=5
5=1.4x-9
5+9=1.4x
14=1.4x
X=10

Let A1, A2, A3 be three-dimensional column vectors, and the determinant | A1, A2, A3 | = D, then | 3A1 + A2, 2A2, A3|=

|3a1+a2 2a2 a3|
=|3a1 2a2 a3|+|a2 2a2 a3|
=|3a1 2a2 a3|+0
=3^3*2^3|a1 a2 a3|
=216|a1 a2 a3|
=216d

If 7x + 4 = 25, what is 8x-9?

From 7x + 4 = 25
We get 7x = 21
The solution is x = 3
Substituting it in, there are 8 * 3-9 = 24-9 = 15

Let x1, X2, X3, X4 and X5 be samples from uniformly distributed population U (0, c), and then calculate the joint probability density of samples

1/c^5

If {x + 3} {x + n} = the power of X + MX-15, then the value of M is {}?

X square + xn + 3x + 3N = x square + MX-15
X-square + (3 + n) x + 3N = x-square + MX-15
3+n=m 3n=-15
n=-5
m=-2