Let T : Pn → R be defined by T(p(x)) = the sum of all the...
Let T : Pn → R be defined by T(p(x)) = the sum of all the the
coefficients of p(x). Show that T is a linear transformation with
dim(ker T) = n and conclude that {x − 1, x2 − 1, . . . , x^n − 1}
is a basis of ker T.
Let T : P3(R) → P4(R) be defined by T(f(x)) = 5f′(x)-∫ f(t)dt
(integral from 0 to x)
1. Show that T is a linear transformation.
2.Find dim (P3(R)) and dim (P4(R)).
3.Find rank(T). Find nullity(T)
4. Is T one-to-one? Is T onto? Justify your answers.
f:
R[x] to R is the map defined as f(p(x))=p(2) for any polynomial
p(x) in R[x]. show that f is
1) a homomorphism
2) Ker(f)=(x-2)R[x]
3) prove that R[x]/Ker(f) is an isomorphism with R.
(R in this case is the Reals so
R[x]=a0+a1x+a1x^2...anx^n)
Let A = R x R, and let a relation S be defined as: “(x1, y1)
S (x2, y2) ⬄ points (x1, y1) and (x2, y2)are 5 units
apart.” Determine whether S is reflexive, symmetric, or transitive.
If the answer is “yes,” give a justification (full proof is not
needed); if the answer is “no” you must give a
counterexample.
6. (a) let f : R → R be a function defined by
f(x) =
x + 4 if x ≤ 1
ax + b if 1 < x ≤ 3
3x x 8 if x > 3
Find the values of a and b that makes f(x) continuous on R. [10
marks]
(b) Find the derivative of f(x) = tann 1
1 ∞x
1 + x
. [15 marks]
(c) Find f
0
(x) using logarithmic differentiation, where f(x)...
Let P denote the vector space of all polynomials with real
coefficients and Pn be the set of all polynomials in p
with degree <= n.
a) Show that Pn is a vector subspace of P.
b) Show that {1,x,x2,...,xn} is a basis
for Pn.
Use induction to prove
Let f(x) be a polynomial of degree n in Pn(R). Prove that for
any g(x)∈Pn(R) there exist scalars c0, c1, ...., cn such that
g(x)=c0f(x)+c1f′(x)+c2f′′(x)+⋯+cnf(n)(x), where f(n)(x)denotes the
nth derivative of f(x).
Consider the linear transformation T: R^4 to R^3 defined by T(x,
y, z, w) = (x +2y +z, 2x +2y +3z +w, x +4y +2w)
a) Find the dimension and basis for Im T (the image of T)
b) Find the dimension and basis for Ker ( the Kernel of T)
c) Does the vector v= (2,3,5) belong to Im T? Justify the
answer.
d) Does the vector v= (12,-3,-6,0) belong to Ker? Justify the
answer.
Define the linear transformation S : Pn →
Pn and T : Pn → Pn by S(p(x)) =
p(x + 1), T(p(x)) = p'(x)
(a) Find the matrix associated with S and T with respect to the
standard basis {1, x, x2} for P2 .
(b) Find the matrix associated with S ◦ T(p(x)) for n = 2 and
for the standard basis {1, x, x2}. Is the linear
transformation S ◦ T invertible?
(c) Is S a one-to-one transformation?...