HP50g or other: U. of Houston calc exams
08-10-2015, 03:50 PM (This post was last modified: 08-10-2015 04:04 PM by Didier Lachieze.)
Post: #23
 Didier Lachieze Senior Member Posts: 1,221 Joined: Dec 2013
RE: HP50g or other: U. of Houston calc exams
(08-10-2015 02:12 PM)Hlib Wrote:  Prime users aren't engaged in this little things. They go to sleep and don't know, whether their calculator will work tomorrow.
My Prime has been working every day I needed it, so I don't fear tomorrow

For the first problem (sum of factors of 224551579230):
Code:
CAS.ifactors(224551579230)▶L1 ΣLIST(MAKELIST(L1(I)*L1(I+1),I,1,SIZE(L1),2))
returns 301

And for the second problem (2015 .19), in CAS mode:
Code:
solve({2x-3y=6-7a,-3x+5y=7+2a,7x+11y=4-6a},[a,x,y])
returns a=235/128

and with a^2 in the first equation :
Code:
 solve({2x-3y=6-7a^2,-3x+5y=7+2a,7x+11y=4-6a},[a,x,y])
returns for a: (-2*√21106+23)/238 & (2*√21106+23)/238

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 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

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