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 Super Moderator Staff member Joined Feb 4, 2004 Messages 16,550 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 Super Moderator Staff member Joined Feb 4, 2004 Messages 16,550 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.
