given f(x) = sin2x/(xcosx) a)

given f(x) = sin2x/(xcosx)a) find lim f(x) x->0 B) find lim f(x) x-> pi/4
1. 1 answer
2. asked by hy
3. 701 views
Show that the function f(x) e^xcosx has exactly one turning point when x is between 0 and 90 degrees. Determine the nature of
1. 1 answer
2. asked by Dani
3. 505 views
if sin2x=3sin2y,prove that: 2tan(x-y)=tan(x+y) ( here, in sin2x, 2x is an angle., like there's a formula:sin2x=2sinxcosx and
1. 7 answers
2. asked by aayush
3. 3,467 views
Prove that xcosx< sinx for 0<x<(5π/4)-differentiate the function f(x)=sinx-xcosx
1. 1 answer
2. asked by MTH3312
3. 613 views
d/dx(e^sinx2x)=a)-cos2xe^sinx2x b)cosxe^sin2x c)2e^sin2x d)2cos2xe^sin2x e)-2cos2xe^sin2x
1. 1 answer
2. asked by victoria
3. 957 views
since sin2x+√3cos2x=2sin(2x+60) find the general solution for the equation sin2x+√3cosx=0thank you
1. 1 answer
2. asked by phillip
3. 661 views
Verify the trigonometric identity:[(1–sin²x)/sin²x]–[(csc²x–1)/cos²x]= -tan²x I can't figure this out.
1. 0 answers
2. asked by Matt
3. 712 views
Verify the trigonometric identity:[(1–sin²x)/sin²x]–[(csc²x–1)/cos²x]= -tan²x I still can't figure this out.
1. 2 answers
2. asked by Matt
3. 1,370 views
Can someone help me find ALL solutions in the interval [0,2π) for the given equations. Please show work.1) sin2x = sin2x 2)
1. 2 answers
2. asked by Jane
3. 743 views
tanx = 5/12 and sinx<0Find sin2x and cos2x How to get the answers of sin2x = 120/169 and cos 2x = 119/169?
1. 3 answers
2. asked by Amandeep
3. 1,588 views