Saturday

September 20, 2014

September 20, 2014

Posted by **Julie** on Thursday, April 12, 2012 at 12:28am.

- Calculus grade 12 -
**Reiny**, Thursday, April 12, 2012 at 7:45amf'(x) = 1+ 2cosx(-sinx)

f(π/4) = π/4 + cos^2 (π/4) = π/4 + 1/2 = (2+π)/4

f'(π/4) = 1 + 2(1/√2)(-1/√2) = 1 - 2/2 = 0

so the line is horizontal and its equation is simply

y = (2+π)/4

check my arithmetic, (did not write it down first)

- Calculus grade 12 -
**Julie**, Thursday, April 12, 2012 at 11:52amThanks Reiny, I have checked it over and it seems about right to me. Thank you.

**Answer this Question**

**Related Questions**

Calculus grade 12 - Determine the equation of the tangent line to the function f...

maths - 1. Prove using mathematical induction that 1+2+3+...+n=[ n(n+1)]/2 2. ...

maths - 1. Prove using mathematical induction that 1+2+3+...+n=[ n(n+1)]/2 2. ...

Calculus grade 12 exam review PLEASE HELP ASAP !! - PLEASE HELP ME! Exam is in ...

Calculus - consider the function y = 2sinx a) determine dy/dx b) calculate the ...

Calculus exam review, PLEASE HELP!! - for each function, determine the equation ...

Calculus grade 12 - solve for (<_ = less than or equal to / pie = pie sign...

Calculus - Find the slope m of the tangent line to the graph of the function at ...

Calculus - Find the slope m of the tangent line to the graph of the function at ...

Calculus PLEASE HELP - Find the slope m of the tangent line to the graph of the ...