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ParthKohli

  • 3 years ago

An easy way to memorize the differentiations of trig functions?

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  1. klimenkov
    • 3 years ago
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    |dw:1351326152103:dw|

  2. ParthKohli
    • 3 years ago
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    Can this kinda chain help? sin(x) | cos(x) | -sin(x) | -cos(x) | SIN(X)

  3. etemplin
    • 3 years ago
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    there is no easy way. it comes with enough practice and problems. Thats how i got them. sin=cos, cos=-sin, tan = sec^2, sec = sec*tan...thats what i know...the other 2 dont get used that often. the chain/circular reference does kinda work

  4. ParthKohli
    • 3 years ago
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    Yeah, but where's the tan(x)?

  5. ParthKohli
    • 3 years ago
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    And the hyperbolic ones?

  6. ParthKohli
    • 3 years ago
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    cos = -sin ^

  7. etemplin
    • 3 years ago
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    ive never had to use the hyperbolic ones, and the inverse ones (i.e. sin^-1) are very difficult to memorize because they all look the same

  8. ParthKohli
    • 3 years ago
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    Hmm... okay.

  9. ParthKohli
    • 3 years ago
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    But still, is there a way to memorize all of this stuff?

  10. etemplin
    • 3 years ago
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    do lots of problems. Eventually you'll memorize them because you see them so often

  11. ParthKohli
    • 3 years ago
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    How about the sec and cosec?

  12. etemplin
    • 3 years ago
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    sec = sec*tan, csc = -cscx*cotx. theyre basically opposites, so if you know sec, you can get csc

  13. klimenkov
    • 3 years ago
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    You can refer to such thing, bind sin and cos, tan and sec, cot and cosec. They are together in different formulas.

  14. NickR
    • 3 years ago
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    yup practice

  15. zordoloom
    • 3 years ago
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    I would really like to know this too. Memorizing diff trig variables.

  16. lgbasallote
    • 3 years ago
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    just remember: derivative of a cofunction is negative i.e. d/dx of cos x is -sinx d/dx of csc x is -csc x cot x d/dx of cot x is -csc^2 x

  17. NickR
    • 3 years ago
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    would help alot actually

  18. lgbasallote
    • 3 years ago
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    and most importantly: hate math

  19. calculusfunctions
    • 3 years ago
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    I've never had to memorize them. After doing them a few times, you just know them. I'm only speaking for myself, but I just know all the differentiation rules, trig identities by heart. Actually pretty much any formula, I've never had to really memorize, but rather just understand the justification behind them. I can't explain it but I pretty much know any mathematical formula, rules, etc, by heart. I guess that's why I love MATH!

  20. ParthKohli
    • 3 years ago
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    Hmm. I'd try that way. Thanks @calculusfunctions

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