Originally Posted by
ashleysmithd Hi,
I'm really new to this, just trying to get my head around things.
I've been given the question: 1/sqrt(x) + 3x - x (I've attached a clearer jpeg version)
I'm using the formula: y' = b * ax ^b-1
I am getting the answer '3', through the following working out, however this does not correspond to the answer given by online derivative calculators.
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#1:
1/sqrt(x) + 3x - x
#2:
1/sqrt(x^1) + 3x^1 - x^1
#3:
1/sqrt(1x^1-1) + 1(3x^1-1) - 1x^1-1
#4:
1/sqrt(1x^0) + 1(3x^0) - 1x^0
#5:
1/sqrt(1) + 3 - 1
#6:
1 + 3 -1 = Ans 3
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Can anyone help me with this? Just need to know where or if I'm going wrong.
Thanks.
Daniel.