Using C language to express a and B are not equal to 0 In order to indicate that "a and B are not equal to 0", the C language expression that should be used is () A）（a!=0） || （b!=0） B）a || b C）!（a=0）&&（b!=0） D）a && b

Using C language to express a and B are not equal to 0 In order to indicate that "a and B are not equal to 0", the C language expression that should be used is () A）（a!=0） || （b!=0） B）a || b C）!（a=0）&&（b!=0） D）a && b

a

Let f (x) be an odd function on R, f (x + 2) = - f (x). When 0 ≤ x ≤ 1, f (x) = x, then the value of F (3.5) is
A 0.5 B -0.5 C 1.5 D -1.5
In addition, if the definition field of function y = (AX-1) / root sign (AX + 4ax + 3) is r, then the value range of real number a is r

∵ f (x) is an odd function on R
∴f(x)=-f(-x)
And f (x + 2) = - f (x)
∴f(3.5)
=f(1.5+2)
=-f(1.5)
=-f(-0.5+2)
=f(-0.5)
=-f(0.5)
=-0.5
Choose B
∵ the definition field of function y = (AX-1) / √ (AX & sup2; + 4ax + 3) is r
Whatever the value of X, ax & sup2; + 4ax + 3 is always greater than 0
A > 0 and △ = (4a) & sup2; - 12a = 4A (4a-3) 0
That is, a > 0 and 0

Let f (x) be an odd function on (- ∝, + ∝), f (x + 2) = - f (x), when 0 ≤ x ≤ 1, f (x) = x, then the value of F (3.5) is?

f(3.5)=-f(-3.5)=f(-3.5+2)=f(-1.5)=-f(1.5)=-f(-0.5+2)=-(-f(-0.5))=f(-0.5)=-f(0.5)=-0.5

Let f (x) = 1 + lgx, G (x) = x ^ 2, then the x value of 2F [g (x)] = g [f (x)] is 10 ^ (1 + radical 2) and 10 ^ (1-radical 2)
Let f (x) = 1 + lgx, G (x) = x ^ 2, then the x value of 2F [g (x)] = g [f (x)] is
The answer is 10 ^ (1 + radical 2) and 10 ^ (1-radical 2)

2f(g(x))=g(f(x))
2(1+lgx^2)=(1+lgx)^2
2+4lgx=1+2lgx+(lgx)^2
(lgx)^2-2lgx-1=0
(lgx-1)^2=2
lgx=1±√2
x=10^(1±√2)

The wellhead is 7m deep. A snail climbs up from the bottom of the well. It climbs 3m in the daytime and slides 2m at night. How many days can a snail climb out?
Definitely not 7 ÷ (3-2)

5 days. Climb up and don't slide down on the fifth day

x. Y, Z are real numbers and (Y-Z) square + (X-Y) square + (z-x) square = (y + z-2x) square + (Z + x-2y) square + (x + y-2z) square
Find (YZ + 1) (ZX + 1) (XY + 1) / (xsquare + 1) (ysquare + 1) (zsquare + 1)
‘‘‘‘
Detailed process

A triangle and a parallelogram have the same area and height. If the bottom of the triangle is 10 cm, then the bottom of the parallelogram is 10 cm______ Cm

A: the bottom of a parallelogram is 5cm. So the answer is: 5

Given the fixed point a (4,7), if the moving point P is on the parabola y2 = 4x and the projection of point P on the y-axis is point m, then the maximum value of | PA | - | PM | is______ ．

From the focus f (1, 0) of the topic parabola y2 = 4x (1, 0), the line x = - 1, and do PQ through P, and the vertical line is at point Q, then | PM | = PQ | - 1 and from the properties of the parabola, we can know from the properties of the parabola that | PF | PF | PF | PF | PF-1 ||||||||||||||||||||||||124; ≤| AF | = 4, when p is in a

Factorization: 8A ^ 2 + 8A + 2

Solution
8a²+8a+2
=2(4a²+4a+1)
=2(2a+1)²

As shown in the figure, AB is the diameter of ⊙ o, CD cuts ⊙ o at point C, AC bisects ∠ DAB, proving: ad ⊥ CD

Prove: connect OC, as shown in the figure: ∵ CD is tangent line of circle O, ∵ OC ⊥ CD, ∵ OCD = 90 °, ∵ AC bisects ∵ DAB, ∵ DAC = ∵ OAC, OA = OC, ∵ OAC = ∵ OCA, ∵ DAC = ∵ OCA, ∵ ad ∥ OC, ∵ OCD + ∵ ADC = 180 ° and ∵ OCD = 90 °, ∵ ADC = 90 ° and ≁ ad ⊥ DC