Sunday

September 21, 2014

September 21, 2014

Posted by **stephanie** on Thursday, June 21, 2012 at 3:12pm.

a) y = 3cosx + 4sinx + 1 , when x = pie

b) y = x - 3cosx , when x = (5pie)/3

- Calculus exam review, PLEASE HELP!! -
**Steve**, Thursday, June 21, 2012 at 3:25pmπ is PI not PIE!

a)

y'(x) = -3sinx + 4cosx

y'(π) = -3sin π + 4cos π = -4

y(π) = 3(-1) + 0 + 1 = -2

thus, the line through (π,-2) having slope -4 is

(y+2) = -4(x-pi)

b) y' = 1 + 3sinx

y'(5π/3) = 1 + 3(-√3/2) = 1 - 3√3/2

y(5π/3) = 5π/3 - 3(1/2) = 5π/3 - 3/2

(y-(5π/3 - 3/2) = (1 - 3√3/2)(x-5π/3)

- Calculus exam review, PLEASE HELP!! -
**stephanie**, Thursday, June 21, 2012 at 3:38pmthank you so much steve!

for b) (y-(5π/3 - 3/2) = (1 - 3√3/2)(x-5π/3)

is the square root for the whole 3/2 or is it just root 3 OVER 2.

- Calculus exam review, PLEASE HELP!! -
**Steve**, Thursday, June 21, 2012 at 3:45pmI think by now you know the value of cos(pi/3)

- Calculus exam review, PLEASE HELP!! -
**stephanie**, Thursday, June 21, 2012 at 3:51pm(y-(5π/3 - 3/2) = (1 - (3√3)/2)(x-5π/3)

like that ? :(

**Answer this Question**

**Related Questions**

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

Calculus - 1. a) For the Function and point below , Find f’(a). b) Determine ...

Calculus - 1. a) For the Function and point below , Find f’(a). b) Determine ...

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

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

Calculus 2nd Post please help - Find an equation of the tangent line to the ...

Calc - Write the equation of the line tangent to the graph of the function at ...

calculus - Write the equation of the tangent line to the curve at the indicated ...

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 ...