Sunday

December 21, 2014

December 21, 2014

Posted by **Matt** on Thursday, April 21, 2011 at 9:23pm.

So confused

- calculus -
**bobpursley**, Thursday, April 21, 2011 at 9:45pmy=mx+b f'(3)=5 means m=5

y=5x+b but f(3)=2 means

2=5*3+b, or b= -13

tangent line y= 5x-13

so the zero is 0=5x-13 x=13/5

- calculus -
**Mgraph**, Thursday, April 21, 2011 at 9:51pmThat approximation is the intersection of

the tangent and X-axis.

The equation of the tangent:

y-2=5(x-3)

If y=0 then x=13/5

- calculus -
**bobpursley**, Thursday, April 21, 2011 at 9:53pmnice work, Mgraph.

**Answer this Question**

**Related Questions**

Calculus - Functions? - #1. A cubic polynomial function f is defined by f(x) = ...

calculus - consider g(x)= {a sin x + b, if x ≤ 2pi} {x^2 - pi x + 2, if x...

calculus - Find k such that the line is tangent to the graph of the function. ...

Calculus - 55. Find an equation of the tangent line to the graph of f(x) =x^3 - ...

Calculus - Find k such that the line is tangent to the graph of the function. ...

Calculus - Let f be a twice-differentiable function defined on the interval -1.2...

Calculus (Continuity and Differentiability) - Okay. So I am given a graph of a ...

Calculus c - Let f be a twice-differentiable function defined on the interval -1...

CALCULUS HELP - Write the equation of the tangent line to the graph of the ...

Calculus - 1. Given the function f defined by f(x) = x^3-x^2-4X+4 a. Find the ...