# Posts by Taeyeon

Total # Posts: 17

**math**

A piece of wooden rod 31 cm long is to be cut into three parts, two of which are to be of equal length. the length of each of the two equal part is 5 cm longer than third part. find their lengths. solution pls.

*January 13, 2015*

**7th grade math Ms.Sue please**

awesome guy is wrong wow thanks

*October 5, 2012*

**calculus**

2. Sketch the region in the first quadrant that is bounded by the graphs of y=x^3, y=4X , and 2x+y-3=0 that lies below both straight lines. Find the area of this region. I can see the graph in front of me. which function do I subtract from which?

*March 11, 2012*

**calculus**

Find the area of the region bounded by the graph of y^3=x^3 and the chord joining the points (-1, 1) and (8,

*March 11, 2012*

**calculus**

2. Let R be the region in the first quadrant bounded by the graphs of (x^2/9)+(y^2/81)=1 and 3x+y=9 . a. Set up but do not evaluate an integral representing the area of R. Express the integrand as a function of a single variable. b. Set up but do not evaluate an integral ...

*March 11, 2012*

**calculus**

2. Let R be the region in the first quadrant bounded by the graphs of (x^2/9)+(y^2/81)=1 and 3x+y=9 . a. Set up but do not evaluate an integral representing the area of R. Express the integrand as a function of a single variable. b. Set up but do not evaluate an integral ...

*March 10, 2012*

**calculus**

2. Let R be the region of the first quadrant bounded by the x-axis and the cuve y=2X-X^2 a. Find the volume produced when R is revolved around the x-axis b. Find the volume produced when R is revolved around the y-axis

*March 9, 2012*

**calculus**

1. Let R be the region in the first quadrant enclosed by the graphs of y=4-X , y=3x , and the y-axis. a. Find the area of region R. b. Find the volume of the solid formed by revolving the region R about the x-axis.

*March 9, 2012*

**calculus**

4. When the area in square units of an expanding circle is increasing twice as fast as its radius in linear units, the radius is A. 1/4pi B.1/4 C.1/pi D. 1 E.pi

*February 26, 2012*

**calculus**

3. For what value of k will x+k/x have a relative maximum at x = -2? A. -4 B. -2 C. 2 D. 4 E. None of these

*February 26, 2012*

**calculus**

1. If 3x^2+2xy+y2=2 then the value of dy/dx x = 1 is A. -2 B. 0 C. 2 D. 4 E. not defined

*February 26, 2012*

**calculus**

5. A particle moves along the y – axis with velocity given by v(t)=tsine(t^2) for t>=0 . a. In which direction (up or down) is the particle moving at time t = 1.5? Why? b. Find the acceleration of the particle at time t= 1.5. Is the velocity of the particle increasing ...

*February 26, 2012*

**calculus**

This is what I found in the paper though.

*February 26, 2012*

**calculus**

Consider the curve defined by 2y^3+6X^2(y)- 12x^2 +6y=1 . a. Show that dy/dx= (4x-2xy)/(x^2+y^2+1) b. Write an equation of each horizontal tangent line to the curve. c. The line through the origin with slope -1 is tangent to the curve at point P. Find the x – and y –...

*February 26, 2012*

**Chemistry 12**

ok nevermind, i think i'm right. thanks for the help guys:)

*October 6, 2010*

**Chemistry 12**

Hello fellow comrades, I was assigned the sulphur clock reaction lab and I'm a tad bit confused by it. Anyway, here's the lab procedure: 1. take 5 test tubes, labeled a,b,c,d and e. accurately measure out 10.0 ml of .20M sodium thiosulphate in test tube A 2. in the ...

*October 6, 2010*

**6th grade**

4.00 - 2.56 should give you the right answer:)

*October 6, 2010*

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