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anemone
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If a and b are two real numbers such that ##a^3-3a^2+5a=1## and ##b^3-3b^2+5b=5##, evaluate a + b.
I tried that first came nowhere, perhaps i made some arthimetic errormathman said:Subtract polynomials.
Maybe very gifted high school students...pbuk said:Isn't this supposed to be for secondary-and-high-school-students?
Maybe, but I think most of the posters here have a good few years education beyond high school.erobz said:Maybe very gifted high school students...
I do, and I couldn't get it. Anyhow, at least everyone has hidden the replies. Also, you get rusty if you don't use it. If I could have solved it in a unique way, I would have posted a solution too.pbuk said:Maybe, but I think most of the posters here have a good few years education beyond high school.
Look at the last ~two years powt, 0 or 1 reply starting with "no one answered".pbuk said:I think that progress towards that goal is hindered by posting of solutions/hints by STEM graduates and higher within hours of posting the problem.
I interpret these questions as being appropriate for a certain level of education such as high school because that's what the students there have had but having more education usually means a broader scope but doesn't mean one can do that problem any easier beyond that level. Once you know trig you can attempt a tricky trig problem but knowing differential equations or just being older won't necessarily help you do that tricky trig problem.pbuk said:I think that progress towards that goal is hindered by posting of solutions/hints by STEM graduates and higher within hours of posting the problem.
The formula for finding the sum of two real numbers is a + b, where a and b represent the two numbers being added together.
To solve for a and b in the equation a + b = c, you can rearrange the equation to isolate either a or b. For example, if you want to solve for a, you can subtract b from both sides of the equation, giving you a = c - b.
No, the sum of two real numbers will always be a real number. Complex numbers involve imaginary numbers, which are not included in the set of real numbers.
No, there is no limit to the size of real numbers that can be added together. Real numbers can be infinitely large or infinitely small.
Yes, the sum of two real numbers can be negative. If the two numbers being added together have opposite signs (one positive and one negative), the result will be negative.