Thursday

January 29, 2015

January 29, 2015

Posted by **pipi** on Thursday, November 6, 2008 at 8:27pm.

h(x)=2/x

- high school calculas -
**Reiny**, Thursday, November 6, 2008 at 8:59pmh'(x) = -2/x^2

a function is increasing when its first derivative is positive, and

a function is decreasing when its first derivative is negative.

now look at our derivative, notice the bottom is a square of x, so no matter what you put in, the result will be positive, and this is divided into -2.

so what result will we get??

also notice that both the original and the derivative are undefined for x=0

**Answer this Question**

**Related Questions**

Calc - f(x) = x^2 / (x - 7)^2 (a) Find the vertical and horizontal asymptotes. x...

Calculus (urgent!!) - Please answer the following questions about the function f...

Calculus (pleas help!!!) - Please answer the following questions about the ...

Calculus (pleas help!!!) - Please answer the following questions about the ...

calc - Consider the function below. (Round the answers to two decimal places. f(...

calculus - 6) The function f(x)=4x3−18x2−480x−2 is decreasing ...

Math - For y= (3x)/(2e^x+e^-1), use graphing techniques to find the approximate ...

Calculus - 1. For the function f(x)=4x^3-30x^2+4: a) Find the critical numbers ...

Math - Int Trig - 31) Locate, name, and classify the extrema of the function. ...

Math - For x [–14,13] the function f is defined by f(x)=(x^3)(x+6)^4 On which ...