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TTed replied to the thread integration by parts: integral( (e^-s*t)*sin(t) dt).Thread is 18 years old, FYI.
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SSk28 replied to the thread integration by parts: integral( (e^-s*t)*sin(t) dt).why you didn't use ILATE here so according to ILATE sint = u and e^-st = dv right ? that my question
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The OP mentions here that s/he is 68 years old; I expect that probably narrows down the options. 😊 -
Dr.Peterson reacted to Aion's post in the thread Struggling with The Quadratic Formula excercises. with
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Fair point. When teaching the quadratic formula, it is good practice to write the substitutions as -(−6) and (-6)^2. I was focusing on... -
AAgustinLozano posted the thread Modeling kinetic energy efficiency in cyclical hydraulic systems? in Math Odds & Ends.Hey everyone, I'm working on a mathematical modeling problem for a fluid dynamics project, and I wanted to bounce the baseline logic off...
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AAion replied to the thread Struggling with The Quadratic Formula excercises..Fair point. When teaching the quadratic formula, it is good practice to write the substitutions as -(−6) and (-6)^2. I was focusing on...
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Llookagain replied to the thread Struggling with The Quadratic Formula excercises..No, similar to the expression of post #2 of mrtwhs, it would begin with x \ = \ \frac{-(-6) \ \pm \sqrt{(-6)^2 \ - \ 4(1)(8)}}{2(1)}...
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King Friday replied to the thread Struggling with The Quadratic Formula excercises..Misery loves company. -
blamocur replied to the thread Struggling with The Quadratic Formula excercises..Being an idiot is a recurring experience in all my studies :) -
AAion reacted to King Friday's post in the thread Struggling with The Quadratic Formula excercises. with Like.
That's nice and you grew up doing it that way! So much to learn from other cultures. I've been hammering away at the for the last few...
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King Friday replied to the thread Struggling with The Quadratic Formula excercises..That's nice and you grew up doing it that way! So much to learn from other cultures. I've been hammering away at the for the last few...
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AAion replied to the thread Struggling with The Quadratic Formula excercises..No worries. As a side remark: in all of these problems the coefficient of x^2 is 1, so the equations are already in the form x^2+px+q=0...
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FI am 68 years old and studying high school Algebra at home with an online course on Udemy. My hope is a progress to Pre-Calc and...
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King Friday reacted to mrtwhs's post in the thread Struggling with The Quadratic Formula excercises. with Like.
The first thing you need to do is read the quadratric formula correctly. Correct is \dfrac{-b \pm \sqrt{b^2-4ac}}{2a} What you are...
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King Friday reacted to Aion's post in the thread Struggling with The Quadratic Formula excercises. with Like.
For the first part, the answer is correct, but it looks like you wrote the expression incorrectly. You are solving x^2+x-2=0 Applying...
