HP50g or other: U. of Houston calc exams
08-10-2015, 12:07 AM (This post was last modified: 08-10-2015 12:39 AM by CR Haeger.)
Post: #20
 CR Haeger Member Posts: 275 Joined: Dec 2013
RE: HP50g or other: U. of Houston calc exams
Its been a while, but I think you can reduce to the a terms as follows:

A. 2x -3y = 6 - 7a^2 Parabolic surface?
B. -3x + 5y = 7+ 2a Plane
C. 7x +11y = 4 - 6a Plane

B*7/3 +C:
-7x + (35/3)y = (49/3) + (14/3)a
+7x +11y = 4 - 6a
D. 0x +(68/3)y = (61/3) - (4/3)a

A + B*⅔::
+2x -3y = 6 - 7a^2
-2x (10/3)y = (14/3) +(4/3)a
E. 0x +(⅓)y = (32/3) -7a^2 +(4/3)a

D - 68*E:
(68/3)y = (61/3) - (4/3)a
(-68/3)y = (-68*32/3) -68*(-7a^2) +(-68*4/3)a
F. 0y = -705 +476a^2 -92a

Ti36x [poly solv] for the quadratic (F) yielded a = -1.123... or +1.317.... Back solving for x = 0.0214 and y = 0.963 for a=-1.123... If this is correct, Ill have a drink and if not, two.

I expect the 50g or Prime could make quick work of this.
 « Next Oldest | Next Newest »

 Messages In This Thread HP50g or other: U. of Houston calc exams - Peter Murphy - 08-05-2015, 04:58 AM RE: HP50g or other: U. of Houston calc exams - Brad Barton - 08-05-2015, 06:40 PM RE: HP50g or other: U. of Houston calc exams - Joe Horn - 08-06-2015, 09:31 AM RE: HP50g or other: U. of Houston calc exams - Peter Murphy - 08-05-2015, 07:06 PM RE: HP50g or other: U. of Houston calc exams - Gilles - 08-05-2015, 07:13 PM RE: HP50g or other: U. of Houston calc exams - Peter Murphy - 08-05-2015, 11:34 PM RE: HP50g or other: U. of Houston calc exams - Peter Murphy - 08-06-2015, 03:33 PM RE: HP50g or other: U. of Houston calc exams - Jlouis - 08-06-2015, 09:31 PM RE: HP50g or other: U. of Houston calc exams - Peter Murphy - 08-08-2015, 06:00 PM RE: HP50g or other: U. of Houston calc exams - DavidM - 08-09-2015, 12:46 AM RE: HP50g or other: U. of Houston calc exams - Hlib - 08-08-2015, 10:19 PM RE: HP50g or other: U. of Houston calc exams - Gilles - 08-08-2015, 10:52 PM RE: HP50g or other: U. of Houston calc exams - Didier Lachieze - 08-09-2015, 01:10 AM RE: HP50g or other: U. of Houston calc exams - Peter Murphy - 08-09-2015, 02:18 AM RE: HP50g or other: U. of Houston calc exams - Hlib - 08-09-2015, 04:49 PM RE: HP50g or other: U. of Houston calc exams - CR Haeger - 08-09-2015, 07:14 PM RE: HP50g or other: U. of Houston calc exams - Gilles - 08-09-2015, 07:46 PM RE: HP50g or other: U. of Houston calc exams - CR Haeger - 08-09-2015, 08:18 PM RE: HP50g or other: U. of Houston calc exams - Hlib - 08-09-2015, 10:28 PM RE: HP50g or other: U. of Houston calc exams - CR Haeger - 08-10-2015 12:07 AM RE: HP50g or other: U. of Houston calc exams - Hlib - 08-10-2015, 02:12 PM RE: HP50g or other: U. of Houston calc exams - CR Haeger - 08-10-2015, 03:42 PM RE: HP50g or other: U. of Houston calc exams - Didier Lachieze - 08-10-2015, 03:50 PM RE: HP50g or other: U. of Houston calc exams - Peter Murphy - 08-12-2015, 04:22 PM RE: HP50g or other: U. of Houston calc exams - Gilles - 08-12-2015, 09:29 PM RE: HP50g or other: U. of Houston calc exams - CR Haeger - 08-12-2015, 11:21 PM RE: HP50g or other: U. of Houston calc exams - Hlib - 08-13-2015, 06:35 PM RE: HP50g or other: U. of Houston calc exams - Thomas Klemm - 08-12-2015, 05:26 PM RE: HP50g or other: U. of Houston calc exams - Thomas Klemm - 08-12-2015, 10:53 PM RE: HP50g or other: U. of Houston calc exams - Peter Murphy - 08-13-2015, 01:10 AM RE: HP50g or other: U. of Houston calc exams - Gerson W. Barbosa - 08-13-2015, 08:26 PM RE: HP50g or other: U. of Houston calc exams - CR Haeger - 08-13-2015, 11:14 PM RE: HP50g or other: U. of Houston calc exams - pier4r - 05-03-2017, 10:19 PM

User(s) browsing this thread: 1 Guest(s)