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Zero Cool

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  1. Zero Cool

    Derivative problem from old book, is the answer a typo, if not, why not?

    Zero Cool replied to Zero Cool's topic in Analysis and Calculus
    Ok, so p = 2, and not 8, but since they are multiplied, that doesn't make sense to me. I have been out of school for a long time. Now (book is 75years old), would we use some parenthesis or something to show the 2 and the 4 are separate entities?
  2. Zero Cool

    Derivative problem from old book, is the answer a typo, if not, why not?

    Zero Cool posted a topic in Analysis and Calculus
    This problem is from the book Calculus Made Easy by Silvanuws P. Thompson, copyright 1946 (3rd Ed.) How on earth is answer not du/dt = 8u7? The author uses a dot for showing both multiplication and as a divider between the ones column and the tenths column (see pics) Thx

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