What am I doing wrong? Problem: -mn-mr=s, solve for m My input: solve(-mn-mr=s, m) Output on calculator: 1=-s/mn+mr Real answer: m=-s/n+r Why isn't it displaying it the way I want it to?
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For goodness sake, you have to multiply the variables, otherwise, the calculator thinks it's one variable. Enter -m*n-m*r=s You can't just enter -mn. It has to be multiplied. The calculator is a dumb tool. It doesn't know that.
Thanks so much. There's another problem I ran into. Problem: p=4rt-3rs, solve for r My input: solve(p=4*r*t-3*r*s,r) Output on calculator: r= -p/3s-4t Real answer: r= p/4t-3s I should be set for awhile after I'm helped with this one.
Originally Posted by riker Thanks so much. There's another problem I ran into. Problem: p=4rt-3rs, solve for r My input: solve(p=4*r*t-3*r*s,r) Output on calculator: r= -p/3s-4t Real answer: r= p/4t-3s I should be set for awhile after I'm helped with this one. Both answers are the same: (factor out (-1)) $\displaystyle -\frac{p}{3s-t}=\frac{-p}{-(-3s+4t)} = \frac{p}{4t-3s}$
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