anonymous
  • anonymous
Suppose that the functions s and t are defined for all real numbers x as follows. s(x)=x+1 t(x)=4x+4
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
Write the expressions for (s*t)(x), (s+t)(x), and evaluate (s-t)(-1)
apoorvk
  • apoorvk
t(x)=4(x+1).. basically 4 times s(x) so.. multiply (x+1)*4(x+1) for first part that is s*t add 'em for the second. and subtract them for the third and then put x=-1 to evaluate!! simple enough.. post what you get.
anonymous
  • anonymous
first one= 4x^2+8x+4?

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apoorvk
  • apoorvk
ja!!! :) next two??
anonymous
  • anonymous
5x+5?
anonymous
  • anonymous
3x-3?
anonymous
  • anonymous
-3x-3...
anonymous
  • anonymous
wait lol.. :/
apoorvk
  • apoorvk
Rightie-right....!! (-3x-3 would be right you noticed it good) but, you must put x=-1 in the last part as that is what they have asked you to evaluate
anonymous
  • anonymous
go with the -3x-3
anonymous
  • anonymous
so now I do (-3x-3)(-1)?
anonymous
  • anonymous
no, substitute -1 for the x
anonymous
  • anonymous
crap i cant type -3(-1)-3? 3-3 =0
anonymous
  • anonymous
looks good to me
apoorvk
  • apoorvk
yeha thats it... its would be '0'.. you did it!! c'mon ma, have a bit of confidence.. you are doing it alright!!
anonymous
  • anonymous
thank you!

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