Friday

August 29, 2014

August 29, 2014

Posted by **Some kid** on Tuesday, September 29, 2009 at 11:54pm.

21x + 3. Find the smallest value of f at which the tangent to the curve is 3.

I did:

f'(x)+ 6x^2+ 24x + 21= 3

= 6(x+3)(x+1), x= -3, -1

the correct answer is supposed to be -8

- calculus -
**MathMate**, Wednesday, September 30, 2009 at 8:00am"Find the smallest

**value of f**at which the tangent to the curve is 3."

Check the values of f(-3) and f(-1) and you'll get the right answer!

**Related Questions**

calculus - Consider the curve defined by 2y^3+6X^2(y)- 12x^2 +6y=1 . a. Show ...

calculus - Find a function f such that the curve y = f(x) satisfies y'' = 12x, ...

12th Grade Calculus - 1. a.) Find an equation for the line perpendicular to the ...

calculus - Find an equation of the tangent(s) to the curve at a given point. ...

Help Calc.! - original curve: 2y^3+6(x^2)y-12x^2+6y=1 dy/dx=(4x-2xy)/(x^2+y^2+1...

please help; calc - original curve: 2y^3+6(x^2)y-12x^2+6y=1 dy/dx=(4x-2xy)/(x^2+...

calculus - find the points on the curve y=2x^3+3x^2-12x+1 where tangent is ...

calculus - Find the points on the curve y = 2x^3 + 3x^2 - 12x + 1 where the ...

Calculus - Consider the curve given by y^2 = 2+xy (a) show that dy/dx= y/(2y-x...

Calculus - Damon - Find the line which passes through the point (0, 1/4) and is ...