Question

find equation of tangent line to the curve at given point. y= x^4 +5x^2 -x at the point (1, 5)

Answer 1

you would find derivative first, becuase that is = to slope right?

Answer 2

take the derivative, replace x by 1 to get the slope, then use the point-slope formula

Answer 3

ok...i did that, would it be y= 44x - 39 ?

Answer 4

where did the "44" come from?

Answer 5

crap i see what i did...for some reason i used 10 instead of 12 for the derivative of second term

Answer 6

nope thats not it either haha...

Answer 7

\[y'=4x^3+10x-1\] so if x = 1 the slope would be 13

Answer 8

how the heck did i get a 44? hahah

Answer 9

thanks

Answer 10

yw