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Enmath Test 1
terms
18
Mathematics
Undergraduate 2
02/02/2009

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Term
subsidiary equation
Definition
the algebraic equation that results from a laplace transform
Term
existence of laplace
Definition
1. piecewise continuous
2. exponential order f(t)<=Me^kt
Term
essentially unique
Definition
when two laplace transforms are equal, their functions can only differ at isolated points, i.e. if f and g are continuous, they are equal
Term
unit step function
Definition
u(t-a), also Heaviside function
Term
convolutions are useful for
Definition
1. finding inverse laplace transforms
2. solving integral equations
Term
upper triangular
Definition
every entry above main diagonal is zero
Term
lower triangular
Definition
every entry below main diagonal is zero
Term
symmetric
Definition
A=A^T
Term
diagonal
Definition
every entry above and below diagonal is zero
Term
det(A^T)
Definition
det(A)
Term
det(cA)
Definition
(c^n)det(A)
Term
det(A)det(B)
Definition
det(B)det(A)=det(BA)=det(AB)
Term
det(A^-1)
Definition
1/det(A)
Term
det(triangular matrix)
Definition
products of diagonal entries
Term
det(row or column of zeros)
Definition
zero
Term
singular
Definition
not having a an inverse, det=0
Term
nonsingular
Definition
having an inverse
Term
basis
Definition
linearly independent and spanning V
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