March 2016

Ace Robert Campos's picture

Differential Equation: Thermometer reading

Submitted by Ace Robert Campos on March 3, 2016 - 12:08pm

At 1:00pm., a thermometer reading 70F is taken outside where the air temperature is -10F (ten below zero). At 1:02pm., the reading is 26F. At 1:05pm., the thermometer is taken back indoors, where the air is at 70F. What is the temperature reading at 1:09pm?

Centroid of area in the first quadrant bounded by circle and ellipse

Submitted by benty on March 6, 2016 - 8:20pm

Find the centroid of the area in the first quadrant bounded by the ellipse x^2/a^2+y^2/b^2=1 and the circle x^2+y^2=a^2.

light_angel's picture

Centroid of Polar Curve by Integration

Submitted by light_angel on March 7, 2016 - 9:39pm

Patulong po for this problem. I really need to know the solution of this.
find the centroid of the area enclosed by the cardioid r=a(1+cos theta).

Mary Ann Lopez Suerte's picture

assignment: goat tethered to the corner of rectangular shed

Submitted by Mary Ann Lopez ... on March 8, 2016 - 5:25pm

a goat is tethered to a corner of a 4m by 5m shed by 6m rope what is the maximum area the goat cover?

light_angel's picture

Centroid of area bounded by parabola and line

Submitted by light_angel on March 8, 2016 - 8:36pm

Patulong po....
Find the centroid of the area bounded by the curves y=2x and y^2 =4ax using polar coordinates.

Kim Michael Soriano Turgo's picture

Discussion on: Solution to Problem 411 | Shear and Moment Diagrams

Submitted by Kim Michael Sor... on March 8, 2016 - 11:38pm

Following is a discussion on the Reviewer item titled: Solution to Problem 411 | Shear and Moment Diagrams. Feel free to add your own comments!

Harvey Biñan Lao's picture

Sold Menuration- Frustum of a rectangular pyramid

Submitted by Harvey Biñan Lao on March 9, 2016 - 8:22am

the height of a storage bin, in the form of a frustum of a rectangular pyramid, is 6 ft. its volume is 818cu.ft , and the upper base is 4 ft. by 16 ft. what are the dimensions of the lower base?

Jeanvill Paladan Milla's picture

area of the region bounded

Submitted by Jeanvill Palada... on March 11, 2016 - 10:39am

20160310_213312.jpg

Roydon Jude S. Samudio's picture

Centroid of volume formed by rotating about the y-axis the area bounded by 3 lines

Submitted by Roydon Jude S. ... on March 14, 2016 - 4:40am

Centroid of the solid generated by the area Bounded by y=x, y=3x and X + Y= 8 about y axis

Ecarg Ennaillij Agazra's picture

pano po malalaman kung asa ung neutral axis sa flexure formula

Submitted by Ecarg Ennaillij... on March 15, 2016 - 12:08am

/reviewer/mechanics-and-strength-of-materials/solution-to-problem-507-flexure-formula

Volume in the first octant bounded by the surfaces $z = x + y$ and $y = 1 - x^2$

Submitted by benty on March 15, 2016 - 4:59pm

Find the volume using multiple integral in the first octant bounded by the surfaces z = x + y, y = 1 - x^2.

PLANE GEOMETRY

Submitted by tyron on March 16, 2016 - 10:01am

/reviewer/plane-geometry/13-length-belt-connecting-two-pulleys long method hehehehe belt.png

Roydon Jude S. Samudio's picture

moment of inertia of an area with respect to the line x = 2

Submitted by Roydon Jude S. ... on March 16, 2016 - 4:48pm

The moment of inertia bounded by y=x^3 , y=2x , X + y= 6, with respect to x=2 pa help po until Friday. Plus ask ko Lang po ang pinakakapakipakinabang na calculus book for integration applications. Thanks.

Roydon Jude S. Samudio's picture

Force of Fluid by Integration: Total hydrostatic force acting on the slant side of trapezoidal trough

Submitted by Roydon Jude S. ... on March 16, 2016 - 5:06pm

A trough of length 6 ft has for its vertical cross section an isosceles trapezoid. The upper and lower base are 6 ft and 2 ft respectively and the altitude is 2 ft. If the trough is full of water, find the force on the slant side of the trough.

Sagar Kumar's picture

I need help. Area inside a circle but outside the two opposite quarter circles

Submitted by Sagar Kumar on March 18, 2016 - 4:45am

Hi! Please find the area of the shaded region given in the figure.
12791037_1682773475327815_9199035459940223503_n.jpg

elementary differential equation

Submitted by tyron on March 18, 2016 - 5:56pm

/reviewer/elementary-differential-equations/theremometer-reading-after-6-minutes-being-outside baka sakali makatulong eto.....p_20160318_174135.jpg

Jeanvill Paladan Milla's picture

volumes of solids of revolution

Submitted by Jeanvill Palada... on March 19, 2016 - 4:54pm

problem no.1
find the volume of the solid that results when the region enclosed by y=squareroot of x,y=0, and x=9 is revolved about the line x=9

prob.no.2
find the volume of the solid that results when the region in problem no. 1 is revolved about the line y=3

Rendel Reasol Delasan's picture

Rendel

Submitted by Rendel Reasol D... on March 21, 2016 - 6:22pm

example po sa locus Analytic geometry .. yong with figure tsaka solution .. pls

Howard Narvaez Ison's picture

please heeeelp

Submitted by Howard Narvaez Ison on March 22, 2016 - 9:59am

from a point A 10 cm from a plane P, a perpendicular line AC is drawn passing through a circle with center C and radius of 8 cm in the plane. At any point B on this circle, a tangent BD is drawn 18 cm in length. FInd the distance from A to D.

Integral calculus: volume and centroid of the solid

Submitted by Andrei on March 22, 2016 - 5:08pm

Please help po dito

Region 1 is bounded by the x axis, the line x=1 and the curve y=x^2.find the volume and centroid of the solid generated when the indicated region is revolved about y axis and revolved about x axis

Volume by integration

Submitted by Andrei on March 22, 2016 - 5:18pm

Find the volume and centroid of the solid generated using disc and shel methods,as the region bounded by the curve y^2=8x, the x axis and the latus rectun of the curve is revolved about:
A. The x axis
B. The y axis
C. The latus rectum

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