Posted by **Paul** on Saturday, February 16, 2013 at 11:44am.

Find to find equation of the tangent line y=x^4-x^3-x^2-x+1 at the point x=1

- Math -
**JJ**, Saturday, February 16, 2013 at 2:07pm
Is the calculus?

If so, take the derivative of y which would be 4x^3 - 3x^2-2x -1

Let x =1 to find the slope

4-3-2-1 = m = -2

find the value of y when x = 1

You will then have the slope and a point to use to find the equation using y=mx+b

- Math -
**Paul**, Saturday, February 16, 2013 at 2:51pm
so i found the y=-1

then i subbed into y=mx+b and got -1=-2(1)+b

1=b

then my equation would be -1=-2(1)+1

is that right?

## Answer This Question

## Related Questions

- calculus - To find the equation of a line, we need the slope of the line and a ...
- math - Use implicit differentiation to find the equation of the tangent line to ...
- Calc. - Find the area of the region bounded by the parabola y=x^2, the tangent ...
- calculus - 1. Which of the following expressions is the definition of the ...
- Calculus - If F(x)=x^3−7x+5, use the limit definition of the derivative to...
- Calculus - 1) An equation of the line contains points (7/9, 7) and (-7/9) is 2) ...
- Calculus - Damon - Find the line which passes through the point (0, 1/4) and is ...
- calculus - 5. Let f be the function given by f(x) = x3- 7x + 6. a. Find the ...
- Calculus - If f(x)=(3x)/(1+x^2) find f′(4). Use this to find the equation ...
- Math - Suppose f(x)=5/(x-2). f'(5)=-5/9. Use this to find the equation of the ...

More Related Questions