01/03/14

Find the integral?
Given f(x)=x+1 for x<0, cos pi*x for x≥0, find ∫ f(x)dx from -1 to 1.   Answer: 1/2
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01/03/14

Use the power reducing identities to write sin^2xcos^2x in terms of the first power of cosine.
This is for my trig class. Thanks for the help!
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01/01/14

For which of the following choices?
Let f(x)=3x+1 for all real x and let ε>0. For which of the following choices of δ is abs(f(x)-7)<ε whenever abs(x-2)<δ?   a) ε/4 b) ε/2 c) ε/(ε+1) d) (ε+1)/ε e) 3ε   Answer: A
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12/23/13

how do you find the values of x and y?
in the triangle there is one angle that is 51 degrees.
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12/21/13

What's the limit?
What's the limit of (8(1/2+h)^8-8(1/2)^8)/h as h approaches to 0?   Answer: 1/2
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12/19/13

What's the closest integer approximation?
Let R be the region enclosed by the graph of y=sin e^x^2, the x-axis, and the lines x=-1 and x=1. What's the closest integer approximation of the area of R?   Answer: 2   Since it's x-axis,... more
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12/19/13

Evaluate the integral and interpret it as the area of a region.
an integral from 0 to pi/2            the function is |5sin(x)-5cos(2x)|dx
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12/14/13

Help with an integral
Can you help me in calculating the integral>   I= dx/sinx(2+cosx-2sinx)    I could really use the help. Thanks to everyone!
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12/13/13

regarding elips
the orbit of the earth around the sun is an ellipse  sun  is on one foci. if length of major axis is 300 million km and eccentricity is 0.0167 find minimum and maximum distance of the earth from... more
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12/01/13

x(x+3.7)= 18.3
On my assignment I've got a question that I'm stuck with.  I've got to find dimensions of a rectangle with the information that is given:Area: 18.3 cm2 ; Width: xLength: x+3.7   so i came up... more
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11/29/13

For the entire radical v90x^2 , state the restriction on the variable. Then express each as a mixed radical?
I'm guessing that there is no restriction because the expression is positive? I'd appreciate any steps for clear understanding   Thanks in advance
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11/28/13

There are two dinstict round tables,each with 5 seats,in how many ways may a group of 10 be seated
permutations &combinations
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11/27/13

find the vertical asymptotes of the graph
find the vertical asymptotes of the graph of    f(x)= (x+1)/(x2+3x-10) please show step by step 
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11/23/13

Determine the probability that the demand.
Demands for bluetooth headsets at a wireless phone center occur at an average of 11 perday and a standard deviation of 5. The center has an inventory of 100 and does notexpect replenishment in the... more
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11/16/13

Find the probability model of your net gain.
A Nevada roulette wheel had 38 pockets, labeled as 0 00 1 2 3 ... 35 36. One bet is single number. If you bet $1 on a number (any one between 1 and 36) and the number comes up, you get the dollar... more
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11/13/13

What light is reflected if a certain light was shined on a certain pigment?
Mixing Lights & Pigments - If the light of the color is shining on the pigments, what light will be reflected, if any?   I have put what I thought is the correct light being reflected. I... more
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11/11/13

mean value theorem problems
does √x(x-1) obey mean value theorem in closed inerval 0,1 .how?
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11/11/13

intersection
find the points of intersection of parabola and ellipse. find the points of intersection of two ellipse. 
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11/04/13

I am smart at math but when i take a quiz or test then i always do bad. I feel stupid and my parents yell at me for getting low grades. What should i do?
I need help. What do i do?
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11/04/13

inverses and exponents
f(x)=ex has an inverse of f-1(x)=lnx     Explain why eln(x)=ln(ex)   I don't know how to explain. Thank you.
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11/03/13

Find Power Series and interval of convergence
Find Power Series and interval of convergence of g(x) = x-2 ln(1+x2)
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11/02/13

What must be the coordinates of point B so that the line x = 2 is the perpendicular bisector of AB ?
Point A (–4,1) is in the standard (x,y) coordinate plane. What must be the coordinatesof point B so that the line x = 2 is the perpendicular bisector of AB¯ ?
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11/01/13

slope that runs through points (2,9) (6,-4)
what is the slope that runs through the points (2,9) & (6,-4) I can't understand it please help
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10/31/13

Very complicated integral
I'm looking for a solution to the following integral:int (1/sqrt[1 - x^2 + a (x^6 - x^12)]) dxwhere a is a parameter.Could you help me to find a solution? please!
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10/29/13

money problems
bobbie has 1.54 in quarters, dimes, nickels, and pennies.  he has twice as many dimes as quarters and three times as many nickels as dimes.  The number of pennies is the same as the number of... more
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