English translation Be troubled______ The trouble______ . seriously hurt_____ No computer translation

English translation Be troubled______ The trouble______ . seriously hurt_____ No computer translation

be worried
the trouble
hurt badly
English translation
I left the phrase newspaper at school, and now it's up to you boys
1.make the appointment with
2.it is high time that
3.before long
4.long before
Five adjust.to .
Six not.but .
7.the rate of population increase
8.make arrangement for sb to do sth
9.have sth in common
10.take .into account=
11.open a bank account
on account of
contrast A with B
in contarst to...
compare A with B
compare A to B
in comparison with
on the menu of...
eating patterns
prepare sth
prepare for sth
make preparations for
an experienced worker
be aware of..
be aware that..
the awareness of environment
play closer attention to
usual time
usual place
1. Make the appointment with
It is high time that
3. Before long
Long before
Five adjust.to Adjust to
Six not.but . No. twenty
7. The rate of population increase
Make arrangement for sb to do sth
9. Have sth in common
10. Take. Into account = take into account
11. Open a bank account
Because of account of
Contrast a with B
On the contrary
Compare a with B
Compare a to B
In comparison with
On the menu of
Eating patterns
Prepare sth
Prepare for sth
Make preparations for
An experienced worker
Be aware of
Be aware of that
The awareness of environment
Play closer attention to pay
Usual time
Usual place
When x is the independent variable, Y 1 = x, y 2 = X-10 and Y 3 = 40-2x are all above the x-axis
According to the meaning of the problem, the inequality system X ﹥ x ﹥ x ﹥ x ﹥ x ﹥ x ﹥ x ﹥ x ﹥ x ﹥ x ﹥ x ﹥ x ﹥ x ﹥ x ﹥ x ﹥ x ﹥ x ﹥ x ﹥ x
Which of the following functions has a period of 2 / π?
A.y=sin2/x
B.Y=sin2x
C.y=cos4/x
D.y=cos4x
Detailed explanation and function period
The period is usually calculated as follows: T = 2 π / ω (ω is the coefficient before x)
If x is on the denominator, we use OMEGA / 2 π (where Omega is the molecule)
T = 2 / 2 π = 1 / π in this problem a
T = 2 π / 2 = π of B
T = 4 / 2 π = 2 / π of C (answer)
T = 2 π / 4 = π / 2 of D
The value range of logarithmic function
What is the base 2 (x-1) domain of y = log?
The answer is (1, positive infinity)
I want to know how
X>1
Analysis: from the definition domain of log function: X-1 > 0; so the solution, x > 1
X-1 > 0, that is, x > 1
X>1
Domain refers to the scope of X: x > 1
x-1>0
X>1
x> 1 and X is not equal to 2
Given the square of function Y1 = x and the image of function y2 = - 1 / 2 x + 3, it is roughly as shown in the figure
x²=-x/2+3
2x²+x-6=0
12
2 -3
(x+2)(2x-3)=0
Solution
x=-2 or x=3/2
It can be seen from the image
Y1
Find the period of the following functions
1.y=1/(1+sin2x)
2.y=sin^2(x)
3.y=(sinx-1/2)^2+1
One
The period of sin2x is 2pi / 2 = Pi
So the period of y = 1 / (1 + sin2x) is pi
Two
y=sin^2(x)=(1-cos2x)/2
The period of cos2x is pi
So y = sin ^ 2 (x) period is pi
Three
y=(sinx-1/2)^2+1=sin^2(x)-sinx+5/4
The period of sin ^ 2 (x) is pi, and the period of SiN x is 2pi
So y = = (sinx-1 / 2) ^ 2 + 1, the period is 2pi
Logarithmic function in a certain interval meaning, find the value range of A
If the function log takes 10 as the bottom one-third * (the x power of a * 4 + the x power of 2 + 1) is meaningful in (- no research, 1), find the value range of real number a
(- no research, 1] is a subset of the domain. Let the x power of 2 be t, then the original proposition is equivalent to: at ^ 2 + T + 1 is greater than 0 in t belonging to (0,2], and find the value range of real number A. that is, a is a constant tenable problem. A can be regarded as a principal element, t as a parameter, then it is a first-order function, and can be substituted into the boundary value. The answer is: a > (- 3 / 4)
I strongly support the first floor of the painting is right
For any function FX and GX in the common domain, it is specified that FX * GX = min {FX * GX} if FX = 3-x, GX = root 2x-3, find F
Can you write it more clearly?
Find the period of the following function
1、y=sin3/4x,x∈R
2、y=cos4x,x∈R
3、y=1/2cosx,x∈R
4、y=sin（1/3x+π/4）,x∈R
The period of sin and COS is 2 π
therefore
1、y=sin3/4x,x∈R
T=2π/(3/4)=8π/3
2、y=cos4x,x∈R
T=2π/4=π/2
3、y=1/2cosx,x∈R
T=2π/1=2π
4、y=sin（1/3x+π/4）,x∈R
T=2π/(1/3)=6π