anonymous
  • anonymous
how do i differentiate a function
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
it depends on the function, there are different rules you can use for different types
anonymous
  • anonymous
use the rules of differentiatin
anonymous
  • anonymous
what if i have like, sin(3x^3 +1) how would i do that?

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anonymous
  • anonymous
use the trig rules of differentiation, the derivative of sin is cos, the derivative of cosx is -sinx and the derivative of -sinx is -cosx. Last the derivative of -cosx is sinx, then the pattern starts over
anonymous
  • anonymous
then you need to use the chain rule for 3x^3+1
anonymous
  • anonymous
so, im gonna say, cosx(9x+1)?
anonymous
  • anonymous
oh wait, imeant 9x^2 +1
anonymous
  • anonymous
almost except you take the derivative of the outside function of sin(3x^3+1), disregard the 3x^3+1 and we will make that x, so the derivative of sinx is cos x.
anonymous
  • anonymous
so what would the final answer be?..youre answer is kinda confusing:p
anonymous
  • anonymous
then replace the x and the derivative is cos(3x^3+1). BEcause there is a function within sinx we must use the chain rule. Now you need to to multiply by the derivative of the inside function of (3x^3+1) which is 9x. The derivative of the while funtion should now be 9xcos(3x^3+1)
anonymous
  • anonymous
ohhhh okay, thank you :)

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