J Jeffy New member Joined Feb 9, 2006 Messages 8 Feb 9, 2006 #1 Find the slope of the line tangent to the graph of the function at the given value of x. y = -8x^-1 + 5x^-2; x = 2 when I did this I got 13/4 is this right? -Jeff
Find the slope of the line tangent to the graph of the function at the given value of x. y = -8x^-1 + 5x^-2; x = 2 when I did this I got 13/4 is this right? -Jeff
stapel Elite Member Joined Feb 4, 2004 Messages 16,543 Feb 9, 2006 #2 Jeffy said: when I did this I got 13/4 is this right? Click to expand... I'm getting something else. Please reply showing your work. Thank you. Eliz.
Jeffy said: when I did this I got 13/4 is this right? Click to expand... I'm getting something else. Please reply showing your work. Thank you. Eliz.
stapel Elite Member Joined Feb 4, 2004 Messages 16,543 Feb 9, 2006 #4 Jeffy said: my finger is broke -3/4 Click to expand... I frequently have the same problem. :wink: Check your signs. I could be wrong, of course, but I'm getting 2 - 5/4 = +3/4. Thank you. Eliz.
Jeffy said: my finger is broke -3/4 Click to expand... I frequently have the same problem. :wink: Check your signs. I could be wrong, of course, but I'm getting 2 - 5/4 = +3/4. Thank you. Eliz.
