# calc

Evaluate the given expression.

d
dx
[2(x2 + 3|x|)]
1

1. 👍 0
2. 👎 0
3. 👁 146
1. I am guessing you want the derivative of the piecewise-continuous function

f(x) = 2(x^2 + 3|x|) ,

but what does the "1" represent?

If you want the derivative at x=1, you can remove the | | signs

1. 👍 0
2. 👎 0
2. For |x|, we have 2 situations.
|x| = x, for x >= 0
|x| = -x, for x < 0

So:
¤ for x>=0:
d/dx (2(x^2 + 3x)) = ?
¤ for x<0:
d/dx (2(x^2 - 3x)) = ?

1. 👍 0
2. 👎 0

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