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3 years ago

(transformasi laplace) tentukan L { f ( t ) } apabila f(t) masing masing fungsi berikut. f(t)= 5t^3 - 6sin2t + 4e^-4t

Mathematics

1 answer:

PIT_PIT [208]3 years ago

4 0

Answer:..................................................................

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AveGali [126]

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3 years ago

Read 2 more answers

Write a polynomial function f of least degree that has rational coefficients, a leading coefficient of 1, and the zeros 4 and 3−

Neko [114]

Answer:

$P(x) = x^3 - 10x^2+ 34x-40$

Step-by-step explanation:

Given

$p =1$ -- Leading coefficient

$Zeros: 4\ and\ 3 - i$

Required

Determine the polynomial

Represent the zeros with a and b

Such that

$a = 4$

$b = 3 - i$

The polynomial is:

$P(x) = p * (x - a) * (x - b)$

$P(x) = 1 * (x - 4) * (x - (3 - i))$

However, to solve further: We need to symmetrise over 3-i and its conjugate

$P(x) = 1 * (x - 4) * (x - (3 - i))* (x - (3 + i))$

$P(x) = (x - 4) * (x - (3 - i))* (x - (3 + i))\\\\$

To define a suitable function, the expression becomes

$P(x) = (x - 4) * ((x - 3)^2+1)$

$P(x) = (x - 4) * ((x - 3)(x - 3)+1)$

$P(x) = (x - 4) * (x^2 - 6x + 9+1)$

$P(x) = (x - 4) * (x^2 - 6x +10)$

Open bracket

$P(x) = x^3 - 6x^2 +10x - 4x^2 + 24x-40$

$P(x) = x^3 - 6x^2 - 4x^2+10x + 24x-40$

$P(x) = x^3 - 10x^2+ 34x-40$

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2 years ago

Seth is trying to find the unit price for a package of blank compact discs on sale at 10 for $5.49. Find his mistake and correct

algol [13]

You haven't shown us his answer or any of his work, so we don't know
whether it was right or wrong, and we have no way to find his mistake
if his work was wrong.

(10 discs) / (5.49 dollars) = (10/5.49) disc/dollar = 1.821 disc per dollar

(5.49 dollars) / (10 discs) = (5.49/10) dollar/disc = 0.549 dollar per disc

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3 years ago

Simplify. Write your answer in standard form.<br><br><br>(4x^3+6x−7)+(3x^3−5x^2−5x+9)

UkoKoshka [18]

answer: 7x^ - 5x^2 + x + 2

step-by-step explanation: i think thats it

3 0

2 years ago

(transformasi laplace) tentukan L { f ( t ) } apabila f(t) masing masing fungsi berikut. f(t)= 5t^3 - 6sin2t + 4e^-4t​

(transformasi laplace) tentukan L { f ( t ) } apabila f(t) masing masing fungsi berikut. f(t)= 5t^3 - 6sin2t + 4e^-4t