Posted by **Steff** on Wednesday, June 15, 2011 at 9:56am.

Just want to check and see if I am setting this up right.

Let y=f(x)=x^2-6x

Find the average rate of change of y with respect to x in the interval from x=4 to x=5

(5^2-6*5)- (4^2-6*4)/ 5-4

- calculus -
**Reiny**, Wednesday, June 15, 2011 at 10:28am
yes, if you meant ....

((5^2-6*5)- (4^2-6*4))/( 5-4)

notice the difference between the way you typed it, and the way Google, which follows the correct order of operation, interpreted it

http://www.google.ca/#hl=en&xhr=t&q=(5%5E2-6*5)-+(4%5E2-6*4)/+5-4&cp=26&pf=p&sclient=psy&safe=off&site=&source=hp&aq=f&aqi=&aql=&oq=(5%5E2-6*5)-+(4%5E2-6*4)/+5-4+&pbx=1&bav=on.2,or.r_gc.r_pw.&fp=44e2b71c39a32254&biw=1630&bih=944

compared with

http://www.google.ca/#hl=en&xhr=t&q=((5%5E2-6*5)-+(4%5E2-6*4))/(+5-4)&cp=30&pf=p&sclient=psy&safe=off&source=hp&aq=f&aqi=&aql=&oq=((5%5E2-6*5)-+(4%5E2-6*4))/(+5-4)+&pbx=1&bav=on.2,or.r_gc.r_pw.&fp=44e2b71c39a32254&biw=1630&bih=944

which is the right way

- calculus -
**Steff**, Wednesday, June 15, 2011 at 10:42am
Thanks. I am on my ipad and it is such a pain to type this stuff out. I get a little lazy.

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