3. Iff and g are two lincar functions: f(x)-axtb and g(x)- cx+d, then what are the conditions on a,b.c and d so that f•g=g+f

Advanced Engineering Mathematics
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ISBN:9780470458365
Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
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3. Iff and g are two lincar functions: f(x)- axtb and g(x) - Cx+d, then what are the
conditions on a,b,c and d so that fg=g+f
4. If f is a function from A to B, and S and T two subsets of A, show thi
a) fiSuT =r(S)Ur(T)
b) f(SnT)Cf(S)nf(T)
5. We consider the function f from R to Z, defined by fix=x]. Is f one-to-cee ? Is
it onto ?
6. We consider the function f from R to Z, defined by fix=xl-1xJ. What is the
range of f?ge
Transcribed Image Text:3. Iff and g are two lincar functions: f(x)- axtb and g(x) - Cx+d, then what are the conditions on a,b,c and d so that fg=g+f 4. If f is a function from A to B, and S and T two subsets of A, show thi a) fiSuT =r(S)Ur(T) b) f(SnT)Cf(S)nf(T) 5. We consider the function f from R to Z, defined by fix=x]. Is f one-to-cee ? Is it onto ? 6. We consider the function f from R to Z, defined by fix=xl-1xJ. What is the range of f?ge
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