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# Здравствуйте!

I am learning mathematics to help further mathematical development in my country.

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 Jul10 comment Differentiating $\frac{te^{\tan t}}{ln(3t+1)}$? Then I didn't need to use the chain rule on $e^{\tan(x)}$? Jul10 comment Differentiating $\frac{te^{\tan t}}{ln(3t+1)}$? @TylerHG Thanks for the heads up. Jul10 comment Differentiating $\frac{te^{\tan t}}{ln(3t+1)}$? Thanks for the help. But the way I was doing would also work, wouldn't it? (No, I'm not planning to use it, I'm just making the stupidity test on myself). Jul10 comment Differentiating $\frac{te^{\tan t}}{ln(3t+1)}$? @TylerHG Yes. It was a poor adaptation from portuguese. I thought one could employ "derive" in english. Jul10 asked Differentiating $\frac{te^{\tan t}}{ln(3t+1)}$? Jul8 asked Where can I find introductory video lectures about calculus and analysis? Jul4 awarded Popular Question Jul2 awarded Socratic Jul2 awarded Curious Jul2 awarded Inquisitive Jun27 comment Are there non-trivial systems of arithmetic in which the order of precedence of the operators does not change the output? @Thoth19 Thanks for the heads up! Jun27 revised Are there non-trivial systems of arithmetic in which the order of precedence of the operators does not change the output? added 12 characters in body Jun27 asked Are there non-trivial systems of arithmetic in which the order of precedence of the operators does not change the output? Jun27 comment What's the importance of a formula for the real and imaginary parts of a complex number? I see. I still didn't read about complex numbers expressed in that way. I just discovered a few seconds ago that they are called complex numbers in the exponential form. Jun27 asked What's the importance of a formula for the real and imaginary parts of a complex number? Jun23 comment Good textbooks and articles from arXiv for undergraduate students? @Zircht Sorry, I've downloaded the source and tried to open without success. Any hints? Jun23 asked Good textbooks and articles from arXiv for undergraduate students? Jun22 asked Introductions to classical and nonclassical logic? Jun17 comment Is there a garden of derivatives? @DaveL.Renfro Great! But why didn't you answered it instead of commenting(so I can upvote you)? Jun14 asked Is there a garden of derivatives?