# Yahoo Web Search

1. Sort by

1. ### Find the equation for the tangent plane at each point.?

the gradient is < 2 x / 9 , y / 2 , 2 z >... at (3 , 0 , 0 ) the tangent plane is : ( 2 / 3 ) ( x - 3 ) = 0 ; at ( 0 , 2 , 0 ) the tangent plane is : ( y - 2 ) = 0 ; at ( 0 , 0 , -1 ) the tangent plane is - 2 ( z + 1 ) = 0 ; at ( 1 , 1 , - √23 / 6 ) the tangent plane is ( 2/9) ( x - 1) + ( 1...

2 Answers · Science & Mathematics · 19/05/2019

2. ### I need help with sketching the region under z=absolute x, and getting two triangular regions?

See Graph https://www.desmos.com/calculator/pgs41pcird

2 Answers · Science & Mathematics · 07/06/2019

3. ### Use partial derivatives to find the line perpendicular to the level curve.?

When z = sqrt(3), you have x^2 + y^2 = 5. The level curve is a circle whose radius is around 2.24. I see no need for partial derivatives, a line perpendicular to a circle is a radius. At (-2,1) the equation of the radius is x + 2y = 0.

1 Answers · Science & Mathematics · 20/05/2019

4. ### Sketch the domain for the following integral and then evaluate?

The region of integration is the region between z = |x| and the xy-plane (which is z = 0) where x is in [-1, 1] and y is in [0, 1]. [I'd sketch the region under z = |x| with x in [-1, 1] in the xy-plane first; this gives a triangular region. Then, I'd extend...

1 Answers · Science & Mathematics · 02/06/2019

5. ### Did I solve this Vector Calculus problem correctly? Triple Integrals?

Yes. (Given Jesus, all is possible.)

1 Answers · Science & Mathematics · 08/06/2019

6. ### What are vectors T, N and B at the origin.?

r = < t , t² , 0 > ; r ' = < 1 , 2t , 0 > ; r ' ' = < 0 , 2 , 0 > = a_T T + a_N N = 2 T + a_N N===> N = < 0 , - 1 , 0 > all at (0,0,0)...B = T x...

1 Answers · Science & Mathematics · 20/05/2019

7. ### Center of mass of a lamina occupying the region D.?

m = ∫∫D ρ(x,y) dA ....= ∫(x = -1 to 1) ∫(y = 0 to 2) x²y dy dx ....= ∫(x = -1 to 1) x²y²/2 {for y = 0 to 2} dx ....= ∫(x = -1 to 1) 2x² dx ....= 2x³/3 {for x = -1 to 1} ....= 4/3. Mx = ∫∫D xρ(x,y) dA ....= ∫(y = 0 to 2) ∫(x = -1 to 1) x...

1 Answers · Science & Mathematics · 02/06/2019

8. ### High School Statistics Problem 12 (Awarding B.A.)?

...4, so: 360 / 4 = 90 unique 4-digit PINs using the 6 digits shown.

3 Answers · Science & Mathematics · 01/10/2019

9. ### 2 sin theta = 1-2cos theta?

Are you sure that's the question? If so, hints: Rewrite as 2( sin(x) + cos(x) ) = 1. And recall sin(π/4 + x) = (sin(x) + cos(x) )*√2/2. And thus... π/4 + x = ? ... I would detail further if u were not anonymous though.

2 Answers · Science & Mathematics · 03/04/2019

10. ### Captain Matticus, LandPiratesInc answered my question.?

It's showing up for me. Y!A has tons of issues with questions and answers just not showing up. It happens. I'm glad it worked out for you.

1 Answers · Science & Mathematics · 19/01/2019