October 2nd, 2019, 04:21 AM  #11 
Senior Member Joined: Mar 2015 From: Universe 2.71828i3.14159 Posts: 132 Thanks: 49 Math Focus: Area of Circle 
But I think answer would be $6x+9$ if question is posted correctly.

October 2nd, 2019, 06:56 AM  #12  
Math Team Joined: Jul 2011 From: Texas Posts: 3,034 Thanks: 1621  Quote:
$y  4 = (6+2\sqrt{5})(x3)$ $y  4 = (62\sqrt{5})(x3)$  
October 2nd, 2019, 12:59 PM  #13  
Newbie Joined: Oct 2019 From: SV USA Posts: 3 Thanks: 1  Quote:
Edit: I see Skeeter beat me to it above. Thank you. Last edited by ISP; October 2nd, 2019 at 01:02 PM.  
October 5th, 2019, 10:01 AM  #14 
Newbie Joined: Oct 2019 From: India Posts: 2 Thanks: 2 
$\displaystyle Y=X^2$ $\displaystyle dy/dx=2x$ @ P(3,4) The value of $\displaystyle dy/dx = 6$ now using the slope tangent equation of line : $\displaystyle (Y9)=6(X3)$ $\displaystyle Y9=6X 18$ $\displaystyle Y=6X9$ Last edited by jinxrifle; October 5th, 2019 at 10:06 AM. 