for the function yx43x26x1 find the tangent line through the
for the function y=x^4-3x^2+6x+1 find the tangent line through the point (1,5)
Solution
y\'(x) = 4x3-6x +6
we know, slope of line at x= 1 is :
y\'(1) = 4 -6 +6 = 4
Now, it passes from (1,5)
So, equation is :
y-5 = 4(x-1)
or,
y -4x -1 =0
