HP50g or other: U. of Houston calc exams

[CR Haeger]

(08-10-2015 02:12 PM)Hlib Wrote:  

(08-10-2015 12:07 AM)CR Haeger Wrote:  ... If this is correct ...
... I expect the 50g or Prime could make quick work of this.

Prime users aren't engaged in this little things. They go to sleep and don't know, whether their calculator will work tomorrow.

I'm a Prime user too... It seemed to work (quickly) today. I am a novice on the 50G.

Using CAS: solve([(2*x-3*y) = (6-7*a^2),(-3*x+5*y) = (7+2*a),(7*x+11*y) = (4-6*a)],[x,y,a])

Exact x,y,a: {[(-52*√21106-7381)/8092,(-4*√21106+7213)/8092,(2*√21106+23)/238],[(52*√21106-7381)/8092,(4*√21106+7213)/8092,(-2*√21106+23)/238]}

Approx x,y,a: {[−1.84571307168,0.819560532948,1.31747093989],[0.021442186857,0.963187860527,−1.12419362897]}