Question

x^4-34x^2+225<0

Answer #1

1.
4(x+1)^2+5(x+1)-8 =
4(-x)^2+5(-x)-8=
4(x^3)^2+5(x^3)-8=
2.
f(x)= { x^2 if x<0. x+9 if x>=0}
f(-2) =
f(-1) =
f(0)=
f(1)=
f(2)=
3. f(x)= {x^2 +8x if x<= -1. X If -1< x<=1. -1 if
x>b1}
F(-3)=
F(-3/2)=
F(-1) =
F(40) =
4.
F(x)= 6x-7
f(2x)=
2f(x)=

Find y as a function of x if
?‴−2?″−?′+2?=0
?(0)=−3, ?′(0)=−4, ?″(0)=0

f(x)= 0 if x < -1
1/2 if -1<=x<2
2/3 if 2<=x<4
1 if 4<=x
be the distribution function of a random variable
X. Find the variance of X. if it is
possible can you please show every single step. thank you

Calculate where f′(x) = 0 if f(x) = (2x2 +
4)2(−x2 + 4)4.

Consider the functions f(x) and g(x), for which f(0)=2, g(0)=4,
f′(0)=12 and g′(0)= -2
find h'(0) for the function h(x) = f(x)/g(x)

Function f (x) = 4 x + 7 for IxI <
2
= 0 for x others
Determinate Fourier series from n= 0 until
n= 2

make a contour map with x=0, y=0, z=0, z=1, z=2, and z=4 for
z=x^2+y^2 then sketch the graph

1. Find the area bounded by f(x)=3x^2-4 and y=0 for 0 < X
< 1.
A. 1 B. 2 C. 6 D. 3
2. The revenue (thousands of dollars) from producing x units of
an item is modeled by R(x)= 5x-0.0005x^2. Find the marginal revenue
at x=1000.
A. $104 B. $4 C. $4.50 D. $10,300
3. Find y' for y=y(x) defined implicitly by 3xy-x^2-4=0
4. Find: lim x->-1 6x+5/5x-6
A. -11 B. 1/11 C. -1/11
D....

The probability distribution of a random variable X is
given.
x
−4
−2
0
2
4
p(X =
x)
0.2
0.1
0.3
0.2
0.2
Compute the mean, variance, and standard deviation of
X. (Round your answers to two decimal places.)
Find mean, variance, and standard deviation

test if the equation ((x^4)(y^2) - y)dx + ((x^2)(y^4) - x)dy = 0 is
exact. If it is not exact, try to find an integrating factor. after
the equation is made exact, solve by looking for integrable
combinations

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