Tuesday
February 28, 2017

Posts by dEE

Total # Posts: 926

calculus
I am having trouble with this problem also derivative differentiate f(x)=(3-x)^4(x+5)^3 so far I have 4(3-x(x+5)^3+3(x+5)(3-x) Not quite right. Treat it as d/dx[u(x) + v(x)] = u dv/dx + v du/dx u(x) = (3-x)^4 v(x) = (x+5)^3 du/dx = -4(3-x))^3 (using the chain rule) dv/dx = 3(x...
March 1, 2007

calculus
derivatives differentiate y=x^7/3 So far I have Y=7/3X Is this all there is to this problem? Using the power rule, you bring the exponent down, just like you did. Then, you subtract one from the given exponent to get the new exponent. 7/3 - 1 (which is 3/3) gives you a new ...
March 1, 2007

Calculus
Derivative Differentiate f(x)=(5x-4)^2 There are two ways to do this: (1) let u = 5x-4, and use the "chain rule", df/dx = df/du * du/dx OR (2) expand the polynomial to f(x) = 25 x^2 -40x + 16 and differentialte it term-by-term. You will get the same answer either way...
February 26, 2007

Finance
The Carter Company's bond mature in 10 years have a par value of 1,000 and an annual coupon payment of $80. The market interest rate for the bond is 9%. What is the price of these bonds The coupon rate on the bond, (interest/principal at maturity) = 8% Since prevailing ...
February 14, 2007

math
Given: f(x)=x^2-1 Find a simplified form of the difference quotient. I will be happy to critique your thinking. I am not going to do it for you. The link I gave you shows you how. Is it set up like this 1(x+h)^2 - 1(x)
February 9, 2007

Calculus
Given: F(x)= 5x^2 a) find a simplified form of the difference quotient b) find the average rate of change (difference quotient)x=4, h=2 Please help... http://www.mathwords.com/d/difference_quotient.htm Ok I went to this site and I saw the formula, how do I set up a problem ...
February 9, 2007

Calculus
1.
February 8, 2007

algebra
This one really threw me off... find the slope of the line containing the points (x, 2x) and (x + h, 2(x +h)) You have to first find the slope, which is change in y over change in x: {[2(x-h)]-2x}/[(x+h)-x] (2x-2h-2x)/(x+h-x) -2h/h m=-2. i don't have an anwser but i need ...
January 23, 2007

algebra
find the equation of a line with slope 4/5 and y-intercept (0,-7) Do I still use the formula y=mx+b? Yes. Let me know what you come up with and I'll let you know if you are correct. So far I came up with y+7 = 4/5(x-0) Now I am stuck... OK, you could do it that way, and ...
January 23, 2007

algebra
find the y-intercept and the slope x + 2y -3 =0 You first have to get this into slope-intercept form: 2y=-x+3 y=-0.5x+1.5 This form is y=mx+b, where m is the slope and b is the y-intercept.
January 23, 2007

PLEASE SOLVE MY RIDDLE
A diller, A dollar, A ten o'clock scholar, what makes you come so soon? You used to come at ten o'clock, But now you come at noon.
December 24, 2006

math
3x-5/6=7x+4/4 If you mean (3x-5)/6= (7x+4)/4 , then 12 x - 20 = 42 x + 24 and you can take it from there. If you mean 3x - 5/6 = 7x + 4/4, then the answer will be different. Please use parentheses to clarify ambiguous algebraic statements such as the one you typed.
December 22, 2006

algebra
e^3x-5=17 Dee: You need to use closure marks. It is impossible to decipher your questions without them. Is this: e^(3x-5)=17 e3x-5=17 or e^(3x)-5 =17 e3x-5 =17 Sorry for the confusion. It is e^(3x-5)=17 e^(3x-5)=17 Take the ln (log base e) of each side. 3x-5= ln17 3x= ln 17 + ...
November 27, 2006

algebra
solve 4^3x-4=32^x+2 Please help! Do you mean 4^(3x) -4 = 32^x +2 ? yes If that is really what you mean, I cannot get a closed-form solution for you. You would have to solve it by trial-and-error or graphical means. If, on the other hand, you mean 4^(3x-4)=32^(x+2), then take ...
November 26, 2006

algebra
solve 4^-x=64 Please help -x log 4 = log 64 -x = log 64/log 4 = 3 x = -3
November 26, 2006

physics
A navy jet with a weight of 231 kN requires an airspeed of 85 m/s for liftoff. The engine develops a maximum force of 107 kN, but that is insufficient for reaching takeoff speed in the 90 m runway available on an aircraft carrier. What minimum force (assumed constant) is ...
November 26, 2006

physics
An interstellar ship has a mass of 1.20 X10^6 kg and is initially at rest relative to a star system. a) what constant acceleration is needed to ring the ship up to a speed of .10c (where c is the speed of light, 3.0X10^8 m/s) relative to the star system in 3 days? b) what is ...
November 26, 2006

physics
Imagine a landing carft approaching the surface of Callisto, one of Jupiture's moons. If the engine provides an upward force (thrust) of 3260 N, the craft descends at constant speed; if the engine provides only 2200 N the craft accelerates downward at .39 m/s^2. a) What is...
November 26, 2006

physics
A 40 kg skier comes directly down a frictionless ski slope that is inclined at an angle of 10 degrees with the horizontal while a strong wind blows parallel to the slope. Determine the magnitude and diercection of the force of the wind on the skier id a) magnitude of the skier...
November 25, 2006

physics
Tarzan wights 820N, swings from a cliff at the end of a 20m vine that hangs from a high tree limb and initially makes an angle of 22 degrees with the vertical. Immediately after Tarzan steps off the cliff the tension in the cine is 760N. Choose a coordinate system for which ...
November 25, 2006

eth
how do you think an average american's perceptions of each group are created? by there upbringing and family teaching Our perceptions of each ethnic group are influenced by our culture, our parents, and our own personal experiences. I suspect there's an underlying ...
November 5, 2006

Stats
Dee's store monthly sales for April, May, June are three independent random variables with means and variances as follow: April: Mean: $9500 Variance: $1250 May: Mean: $7400 Variance: $1425 June: Mean: $8600 Variance: $1610 a) find the mean and standard deviation of the ...
November 3, 2006

Stats
Dee's store monthly sales for April, May, June are three independent random variables with means and variances as follow: April: Mean: $9500 Variance: $1250 May: Mean: $7400 Variance: $1425 June: Mean: $8600 Variance: $1610 a) find the mean and standard deviation of the ...
October 29, 2006

word unscramble
a true temper
September 28, 2006

social studies
What are FIVE CITIES that run along the Mississippi River? the state capital and alabamma help me on this on this paper Since this is not my area of expertise, I searched Google under the key words "'Mississippi River' cities" to get these possible sources: (...
September 25, 2006

orientalism of muslim and arab american
i think I am going to lose my A with this question because I can't find anything on it!
August 6, 2006

  1. Pages:
  2. <<Prev
  3. 1
  4. 2
  5. 3
  6. 4
  7. 5
  8. 6
  9. 7
  10. 8
  11. 9
  12. 10