Question

Why is the equation $z=(x+y)^2+y^2$ a paraboloid?

score 255 · Answer 1 · 2020-04-12 08:02:49

255

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Why is the equation $z=(x+y)^2+y^2$ a paraboloid?

Published on 12 Apr 2020 - 8:02

score 49 · Answer 2 · 2020-04-12 10:44:41

49

Views

Find the coordinates of G, given that FG is the diameter of circle, and F=(9,5) while X, the center of the circle = (5,-3).

Published on 12 Apr 2020 - 10:44

score 23 · Answer 3 · 2020-04-12 11:54:04

23

Views

Parametrization of a line by circle.

Published on 12 Apr 2020 - 11:54

score 67 · Answer 4 · 2026-03-30 08:37:30

67

Views

Question about finding center of a circle touching a parabola

Published on 30 Mar 2026 - 8:37

score 628 · Answer 5 · 2020-04-12 17:40:56

how to test if a point lies inside a Segment of an arc that is formed by a Rectangle and has a start angle and end angle for its arc?

score 48 · Answer 6 · 2026-03-31 17:05:20

48

Views

Show $[TA] \times [AB] =[TB] \times [BC]=[TC] \times [CA]$ by vectors?

Published on 31 Mar 2026 - 17:05

score 38 · Answer 7 · 2026-04-01 01:35:50

38

Views

How to prove the following lines are intersecting on 3d?

Published on 01 Apr 2026 - 1:35

score 77 · Answer 8 · 2020-04-13 07:06:54

77

Views

Two conics with perpendicular directrices intersect at $A$, $B$, $C$, $D$. Show that these points are concyclic.

Published on 13 Apr 2020 - 7:06

score 35 · Answer 9 · 2020-04-13 08:13:40

35

Views

Not understanding why z is being eliminated.

Published on 13 Apr 2020 - 8:13

score 369 · Answer 10 · 2026-03-27 11:46:19

369

Views

A symbol/notation for a line tangent to something?

Published on 27 Mar 2026 - 11:46

score 94 · Answer 11 · 2020-04-13 18:29:29

94

Views

Show that figure is "confined"

Published on 13 Apr 2020 - 18:29

score 156 · Answer 12 · 2020-04-13 22:27:50

156

Views

Finding a plane that cuts the $y$-axis

Published on 13 Apr 2020 - 22:27

score 37 · Answer 13 · 2026-03-30 08:33:03

37

Views

Intersection of a circle $x^2+(y-1)^2=1$ and a parabola $ax^2=y$, bounds for a

Published on 30 Mar 2026 - 8:33

score 34 · Answer 14 · 2020-04-14 19:50:30

34

Views

STEP 2 1990 Question 4: Proving Conditional Perpendicularity of points in the complex plane

Published on 14 Apr 2020 - 19:50

score 30 · Answer 15 · 2020-04-14 20:53:42

30

Views

STEP 3 1989 Q6: Trouble understanding what is meant by focus of two tangents.

Published on 14 Apr 2020 - 20:53

List Question

Why is the equation $z=(x+y)^2+y^2$ a paraboloid?

Find the coordinates of G, given that FG is the diameter of circle, and F=(9,5) while X, the center of the circle = (5,-3).

Parametrization of a line by circle.

Question about finding center of a circle touching a parabola

how to test if a point lies inside a Segment of an arc that is formed by a Rectangle and has a start angle and end angle for its arc?

Show $[TA] \times [AB] =[TB] \times [BC]=[TC] \times [CA]$ by vectors?

How to prove the following lines are intersecting on 3d?

Two conics with perpendicular directrices intersect at $A$, $B$, $C$, $D$. Show that these points are concyclic.

Not understanding why z is being eliminated.

A symbol/notation for a line tangent to something?

Show that figure is "confined"

Finding a plane that cuts the $y$-axis

Intersection of a circle $x^2+(y-1)^2=1$ and a parabola $ax^2=y$, bounds for a

STEP 2 1990 Question 4: Proving Conditional Perpendicularity of points in the complex plane

STEP 3 1989 Q6: Trouble understanding what is meant by focus of two tangents.

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