11. If -1 < y < 0, then which of the following is true

A. y <

B. y

C.

& so on……

for pentagon the diagonals are 4 what is it for heptagon

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- Aug 6th 2009, 01:04 AM #1

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- Aug 6th 2009, 06:13 AM #2

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For your first post.Note;

if 0<|y|<1

then |y^n|<|y^m| and n>m

if -1<y<0

then |y^3|<|y^2| and y^3<y^2 regardless of sign

|y^4|<|y^2| and y^4<y^2 regardless of sign

y,y^3 are -ve, y^2,y^4 are positive

so y<y^3<y^4<y^2

You could just plug in y=-0.5 and it will tell you which is bigger

- Aug 6th 2009, 06:18 AM #3