12/03/15

how do you solve 3/x+x/10=11/2x
it is not addition but multiplyign a common factor from the numerator. the answer is 10x
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12/03/15

URGENT! CALCULUS HELP PLEASE! (:
Consider the following figure. http://www.webassign.net/rogacalcet1/5-1-012.gifCalculate the area of the shaded rectangles. (Round your answer to three decimal places.)
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12/02/15

Prove the statement using the epsilon-delta definition of limit: lim (x?0) x4 = 0
Prove the statement using the epsilon-delta definition of limit: lim (x→0) x4 = 0     I have no idea how to do this and the book has no answers to practice problems.   #19, practice test
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12/02/15

Find a formula for Rn for the function f(x) = (3x)^3 - 3x on [0, 2] in terms of N. Rn=?
I keep getting the wrong answer. I know the area is 102, but I can't find the formula. 
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12/02/15

Find all points where the tangent line is horizontal or vertical
Find all the points where the tangent line to (y^3)-xy=-6 either horizontal or vertical
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11/29/15

Please help me with these identity proofs!!
1) (cscx + cotx) / (tanx + sinx) = cotxcscx   2) (1/secx) -secx = -sinx   3) (1-tan^2x / 1-cot^2x) = -tan^2x
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11/28/15

Evaluate the limit
lim (h --> 0)   (√(1 + h) -1)/h     ANSWER: 1/2 #14, practice problems
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11/28/15

Really Hard Circle Problem
Chords AB and CD cross at right angles at point P. If AP=3, BP=8, and CP=10, compute the radius of the circle.
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11/27/15

Evaluate the limit
lim (h --> 0) ((3 + h)-1 - 3-1)/h     ANSWER: - 1/9 Chap 2, pp13
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11/27/15

Evaluate the limit, if it exists
lim (x --> 16)  (4 - √x)/(16x - x2)     p107, #27 ANSWER: - 1/128
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11/27/15

Evaluate the limit, if it exists
lim (t-->0)  (√(1 + t) - √(1 - t))/t   ANSWER: 1 #25, p107
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11/27/15

Evaluate the limit, if it exist
lim (x --> -4)  (1/4 + 1/x)/(4 + x)     (x/4x + 4/4x)/(4 + x)   ((x + 4)/4x) / (4 + x)   (x + 4)/ (4x(4 + x))   (x + 4)/(8x + 4x2)   But when I plug in -4, I get zero on the top, I... more
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11/27/15

please help area
Find the area of the region between two curves below.   y=2x^2   y=x^2+4
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11/27/15

area question 2
Find the area of the region between two curves below. (Hint: the answer is not 0)   y=x^3 y=x
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11/27/15

Please help me with the following question
A concert hall with 1000 seats is completely filled with x boys, y girls and adults. Admission fee for an adult is $10 while a child pays 1/2 the price. Find in terms of x and y, the total amount... more
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11/27/15

Please help me with the following question
Two cylindrical jars A and B have diameters 12cm and 18cm respectively. Initially, cylinder A contains water to a depth of 21cm and cylinder B is empty. If all the water from cylinder A is poured... more
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11/23/15

Write an equation for the line
Write an equation for the line perpendicular to -5x+y=5, through (5,5) in slope-intercept form. 
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11/23/15

Evaluate the function
Find f(-3) when f(x)=2x²+3x+5
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11/22/15

Evaluate the integral
∫19 (x -1)/(x1/2) dx       ANSWER: 40/3 #29, p395
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11/19/15

A rectangle is inscribed in the ellipse 10x^2+15y^2=150. write the area of the rectangle as a function of one variable (x).
I know the answer is A(x)=4x square root 150-10x^2/15, but I have no clue how to do the problem!
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11/19/15

Sinx=1-x, use newtons method to find the solution to 8 decimal places
Show initial guess, the iteration equation you used, and all intermediate values
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11/16/15

Limit Question
How would I prove the: lim x->pi/2 on the equation (sec(x))/1+tan(x). Im stuck, thank you in advance.
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11/16/15

a rectangle hasa length 7 meters longer than double the width. the perimeter is 134 meters. find the dimension of the rectangle.
could you show steps?so i can see what you did
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11/16/15

mary has $3.50 in change. she has twice as many nickels as quarters. she has one less dime that she has quarters. how many of each coin does she have
i was really confused.....could you show steps?
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11/15/15

Find the limit. Use l’Hospital’s Rule where appropriate. If there is a more elementary method, consider using it. If l’Hospital’s Rule doesn’t apply, explain wh
Find the limit. Use l’Hospital’s Rule where appropriate. If there is a more elementary method, consider using it. If l’Hospital’sRule doesn’t apply, explain why.   lim (theta --> pi/2)   (1 -... more
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