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I think these people mean "I can't do arithmetic" which is much more acceptable, in my opinion. If you asked me to find a derivative, I could probably do it fas
by haubey 13y ago
I think these people mean "I can't do arithmetic" which is much more acceptable, in my opinion. If you asked me to find a derivative, I could probably do it faster than I could find 123*26. It's not because the multiplication is harder, but because I don't have to do it in my head that often anymore. I have a calculator, and I use it. However, I have to do derivatives in math class everyday and at this point I'm probably faster at it. Not being able to do arithmetic is fine by me, I can't do it.
- learc83 13y agoThat's just because there are fewer steps for finding a simple derivative. If you evaluate 12326 in your head, most people probably end up thinking through something like this 123 * 20 + 123 * 6 123 * 20 123 * 10 * 2 1230 * 2 2460 Now remember this part 123 * 6 100*6 + 20*6 + 3*6 100*6 = 600 20*6 = 120 3*6 = 18 600+120+18 738 2460 + 738 = 3198 Now compare that to taking a simple derivative. Although I could ask you to take the derivative of 123x^26.