F (x) = under the root sign (5-x under the root sign) to find the range of X Can you tell me how to calculate it

F (x) = under the root sign (5-x under the root sign) to find the range of X Can you tell me how to calculate it

Greater than or equal to 0 under root sign
So 5 - √ x > = 0
And x > = 0
5-√x>=0
0

】The function f (x) = (root sign 3) sin3x + cos3x + a passes through the point (PI / 3,0)
The function f (x) = (radical 3) sin 3x + cos 3x + A is known to pass through the point (PI / 3,0)
(1) Find the value of a and the minimum positive period of function y = f (x);
(2) If@

f(π/3)=√3sin(3π/3)+cos(3*π/3)+a=0
0-1+a=0
a=1
f(x)=2(√3/2sin3x+1/2cos3x)+1
=2sin(3x+π/6)+1
T=2π/3

A mathematical problem f (x) = root sign (AX ^ 2 + BX) has a positive number B, which makes the domain of definition and range of value the same

Because B ≥ 0 (equal sign not taken) let y = f (x) = root sign (AX ^ 2 + BX) let t = root sign (AX ^ 2 + BX) because t ≥ 0 is obtained from the domain, so ax ^ 2 + BX ≥ 0 if a = 0, B = 1, y = root sign (x) obviously has the same range as the domain. If a is greater than 0, B is greater than 0, then ax ^ 2 + BX ≥ 0 will get x ≥ 0 or X ≤ - B / A

If the function y = f (x) defined on the interval D is a function of
If the function y = f (x) defined on interval D holds the following inequality 1 / 2 [f (x1) + F (x2)] < or = f [(x1 + x2) / 2] for any two values X1 and X2 on interval D, then y = f (x) is called convex function on interval D;
For quadratic function f (x) = ax ^ 2 + BX + C (a)

So, we know that this is a convex function Open your mouth down
If | f (4) | is the maximum, then either f (4) is positive and large, or F (4) is negative and small
If f (4) is positive and large, f (4) must be as large as possible to make | f (4) | maximum, then f (1) = - 1, f (3) = 3 make the function slope maximum, defined by convex function, because a is not 0, so it is impossible to take equality, f (1) + F (3) is less than 2F (2), then f (2) is greater than 1;
If f (4) is negative and very small, f (4) must be as small as possible to make | f (4) | maximum, then f (2) = 2, f (3) = - 3 should make the absolute value of the slope of this function maximum

As shown in the figure, two common point forces F1 and F2 form an acute angle with each other, the resultant force is f, the included angle between F1 and F is α, and the included angle between F2 and F is β. If the magnitude and direction of resultant force F are kept unchanged and F1 is changed, the following judgment is correct for the change of F2 ()
A. If we keep α unchanged and increase F1, then β remains unchanged and F2 becomes smaller. B. if we keep α unchanged and increase F1, then β becomes larger and F2 first becomes smaller and then larger. C. if we keep the size of F1 unchanged and increase α, then β always increases and F2 always increases. D. if we keep the size of F1 unchanged and increase α, then β first increases and then decreases and F2 always increases

A. If the resultant force remains unchanged, if α remains unchanged and FL increases, according to the parallelogram rule, β increases, F2 decreases first and then increases, as shown in the figure below, so a is wrong and B is correct; C. If FL remains unchanged and α increases, according to the parallelogram rule, β increases first and then decreases, F2 always increases, as shown in the figure below, so C is wrong and D is correct; therefore, BD is selected

What is one third of the reciprocal of four and one third?

Hello
1 / 4 and 1 / 3
=3/13x1/3
=1/13
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2, negative 6,12, negative 20,30, find the rule and fill in the seventh

1x2,-2x3,3x4,-4x5,5x6,-6x7,
The seventh 7 × 8 = 56

There are [] products of multiplication of two different prime numbers

Countless

X is greater than 0. And X is less than or equal to 10, written as C language logic expression
Write C language logic expression:
X is greater than 0. And X is less than or equal to 10_________
One of a or B is greater than zero__________

x>0 && x0 || b>0

7 14 10 11 14 9 19 8 what is the law
Digital reasoning

Odd digits: 7,10,14,19
7+3=10
10+4=14
14+5=19
19+6=25
25+7=32,
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Even digits: 14,11,9,8
14-3=11
11-2=9
9-1=8
8-0=8
8+1=9
8+2=10
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