anonymous
  • anonymous
the second deravative of sin2x is?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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lgbasallote
  • lgbasallote
is this sin^2(x) or sin (2x)??
anonymous
  • anonymous
what does second deravitive mean?
anonymous
  • anonymous
no

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lgbasallote
  • lgbasallote
you take the derivative...then take the derivative of the first derivative
anonymous
  • anonymous
how do i do that?
anonymous
  • anonymous
steps please
lgbasallote
  • lgbasallote
which is it? sin ^2 (x)? or sin (2x)? tehy have different derivatives
anonymous
  • anonymous
sin (2x)
lgbasallote
  • lgbasallote
expand it first...it's (2sinx)(cosx)...so take the derivative by product rule... 2sinx(-sinx) + cosx(2cosx) -2sin^2x + 2 cos^2x is the first derivative...now derive this again -4(sinx)(cosx) + 4(cosx)(-sinx) -4(sinx)(cosx) - 4(cosx)(sinx) that is equal to... -8(sinx)(cosx) yes?
anonymous
  • anonymous
i got -4sin2x
lgbasallote
  • lgbasallote
yeah..that's correct too...it's just in a condensed/simplified form
anonymous
  • anonymous
ok

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