(i)4. If p(x) = 5 – 4x + 2x2
, find p(-1) + p(1) – p(0)
Answers
if p(x) =(-1) Then,
if p(x) =(-1) Then, p(-1) = 13
if p(x) =(-1) Then, p(-1) = 13if p(x) =(1) Then,
if p(x) =(-1) Then, p(-1) = 13if p(x) =(1) Then, p(1)= 5
if p(x) =(-1) Then, p(-1) = 13if p(x) =(1) Then, p(1)= 5if p(x) =0 Then,
if p(x) =(-1) Then, p(-1) = 13if p(x) =(1) Then, p(1)= 5if p(x) =0 Then, p(0)= 7
Explaination:
Explaination: put p (x) = (-1) then,
Explaination: put p (x) = (-1) then, p(-1) = 5 -[4×(-1) ] +2×2
= 5-(-4) +4
= 5-(-4) +4 =5+4+4
= 5-(-4) +4 =5+4+4 =13
put p(x) =(1) then,
put p(x) =(1) then, p(1) = 5- (4×1) +2×2
put p(x) =(1) then, p(1) = 5- (4×1) +2×2=5-4+4
put p(x) =(1) then, p(1) = 5- (4×1) +2×2=5-4+4=5
put p(x) = (0) then,
put p(x) = (0) then, p(0) =5-4×0+2×2
put p(x) = (0) then, p(0) =5-4×0+2×2=5+2
put p(x) = (0) then, p(0) =5-4×0+2×2=5+2=7