Thursday
November 27, 2014

Posts by REALLY NEED HELP!!!!


Total # Posts: 22

Math: Calculus
You are given the four points in the plane A = (5,-6), B = (9,1), C = (14,-6), and D = (19,2). The graph of the function f(x) consists of the three line segments AB, BC and CD. Find the integral f(x)dx from 5 to 19 by interpreting the integral in terms of sums and/or ...
November 17, 2010

Math: Calculus
Estimate the area under the graph of f(x)=x^2+2x from x = 4 to x = 10 using 3 approximating rectangles and left endpoints. I got 290.25 as my answer but it's wrong. Would someone explain to me how to answer this question.
November 12, 2010

Math: Calculus
Estimate the area under the graph of f(x)=3x^3+5 from x=-1 to x=4, first using 5 approximating rectangles and right endpoints, and then improving your estimate using 10 approximating rectangles and right endpoints. I'm having problem with using the midpoint to find the ...
November 12, 2010

Math: Calculus
Never mind i got it.
November 11, 2010

Math: Calculus
That's the problem. I have no idea. The question is exactly like i posted it here. I did the same thing but i realized i wasn't given a value of what it should equal to. I was hoping there a different way of solving this problem
November 11, 2010

Math: Calculus
The velocity function is v(t)= t^2-5t+ 4 for a particle moving along a line. The position function s(t) is an antiderivative of the velocity function. Find the displacement, s(6) - s(-3), by the particle during the time interval [-3,6].
November 11, 2010

Math: Calculus
The velocity of a car is f(t)=7t meters/second. Use a graph of f(t) to find the exact distance traveled by the car, in meters, from t = 0 to t = 10 seconds
November 10, 2010

Math: Calculus
Consider the function f(x) whose second derivative is f''(x) = 8x + 4sin(x). If f(0) = 2 and f'(0) = 2, what is f(x)? I got... f'(x)=4(x^2 - cos[x]) and f(x)=(4(x^3 - 3sin[x]))/3 but it's wrong. Can anyone explain to me how to solve this.
November 10, 2010

Math: Calculus
I don't know why but the answer is wrong.
November 10, 2010

Math: Calculus
Given f''(x) = 4x - 3 and f'( -3) =2 and f( -3)=-1. Find f'(x) =______ and find f( 1) =_____
November 10, 2010

Math: Calculus
Can someone help me out here with these two problem? I have know idea where to start. 1)The equation: 10(x-1)(x-2)(x-3)=1, has three real solutions a<b<c where a=____, b=___ , and c=___. Enter your answers with at least six correct digits beyond the decimal point. Hint: ...
November 4, 2010

Math: Calculus
This website doesn't help me in solving my question.
November 4, 2010

Math: Calculus
The equation: 10(x-1)(x-2)(x-3)=1, has three real solutions a<b<c where a=____, b=___ , and c=___. Enter your answers with at least six correct digits beyond the decimal point. Hint: Ask what the solutions are if the right hand side is 0 instead of 1, and use Newton'...
November 4, 2010

Math: Calculus
This website doesn't help me in solving my question.
November 4, 2010

Math: Calculus
Find the smallest positive value of which satisfies -- x=4.100cos(2.800x) Give the answer to four places of accuracy._________ Remember to calculate the trig functions in radian mode.
November 4, 2010

Math: Calculus
f(x)=(x^3)/(x^2-36)
November 3, 2010

Math: Calculus
Answer the following questions for the function f(x) = \frac{ x^3 }{ x^2 - 36 } defined on the interval [ -20, 16 ]. A. The function f(x) has vertical asympototes at____ and___ B. f(x) is concave up on the region___ to and____ to___ C. The inflection point for this function is...
November 3, 2010

Math: Calculus
I manage to get to that point but maximizing it is the problem.
October 29, 2010

Math: Calculus
A cylinder is inscribed in a right circular cone of height 3.5 and radius (at the base) equal to 7. What are the dimensions of such a cylinder which has maximum volume?
October 29, 2010

Math: Calculus
I actually got 10.811 ft
October 29, 2010

Math: Calculus
THANKS YOU Reiny!!! You are a great help. Turns out my "y" was wrong but I did get the "x"
October 29, 2010

Math: Calculus
A fence 6 feet tall runs parallel to a tall building at a distance of 2 feet from the building. What is the length of the shortest ladder that will reach from the ground over the fence to the wall of the building?
October 29, 2010

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