Let L : P2 \rightarrow P3 be a linear transformation

broggesy9

broggesy9

Answered question

2022-04-29

Let L : P2  P3 be a linear transformation for which we
know that L(1) = 1, L(t) = t 2, L(t 2) = t 3 + t.
(a) Find L(2t 2 - 5t + 3). (b) Find L(at 2 + bt + c).

Answer & Explanation

Brianna Sims

Brianna Sims

Beginner2022-04-30Added 19 answers

Given:
Let L: P2P3 be a linear transformation for which L(1)=1,L(t)=t2 & L(t2)=t3+t
To determine:
a) L(2t25t+3) b) L(at2+bt+c)
SInce, L: P2P3 is a linear transformation, therefore, following properties are followed:
1) L(u+ν)=L(u)+L(ν) where u, v are the vectors.
2) L(au)=aL(u) where, aϵF
Part a)
Consider a) L(2t25t+3)
Using above properties, we have,
L(2t25t+3)
=L(2t2)+L(5t)+L(3)
=2L(t2)5L(t)+3L(1)
=2(t3+t)5(t2)+3(1)
=2t3+2t5t2+3
=2t35t2+2t+3
Hence, L(2t25t+3)=2t35t2+2t+3
Part b)
Consider L(at2+bt+c)
Using above properties, we have,
L(at2+bt+c)
=L(at2)+L(bt)+L(c)
=aL(t2)+bL(t)+cL(1)
=a(t3+t)+b(t2)+c(1)
=at3+at+bt2+c
=at3+bt2+at+c
Hence, L(at2+bt+c)=at3+bt2+at+c

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