Question

Evaluate the limit and justify each step by indicating the appropriate limit laws

lim (3x^4 + 2x^2 - x + 1 ) as x approaches -2

Answer 1

lim(3x^4 + 2x^2 - x + 1 )
= lim 3x^4 + lim 2x^2 - lim x + lim 1, lim of sum is sum of lim
= lim3 * (lim x)^4 + lim2*(limx)^2 + lim(-1) limx + lim1,
lim of product is product of lim, lim of exponent is exponent of lim
= 3 (-2)^4 + 2 *(-2)^2 - (-2) + 1, evaluate as x -> -2, lim of constant is constant
= 3*16 + 2*4 + 3
= 48 + 11
= 59

Answer 2

i have some otehr limit problems..can u help me w/ those

Answer 3

post them to all, others may get to them sooner

Answer 4

ok

Answer 5

i posted it