Question 1*Write the correct partial-fraction form for \(\frac{5x+1}{(x-2)(x+3)}\). Do not find the constants.
Question 2*Write the correct partial-fraction form for \(\frac{x+4}{(x-1)^2}\). Do not find the constants.
Question 8**+Write the correct partial-fraction form for \(\frac{4x^2+1}{(x+1)(x^2+4)}\), then identify the numerator type over \(x^2+4\).
Question 12***+Explain why \(\frac{2x+1}{(x-1)^2(x+4)}\) needs three partial-fraction terms, then write the setup.
Question 15****+Find \(a\) so that \(\frac{x+a}{(x-1)(x+2)}\) has equal partial-fraction coefficients, then decompose it.
Question 16****+For which \(k\) does \(\frac{kx+6}{(x-3)(x+1)}\) have no \(\frac{1}{x+1}\) term in its partial-fraction decomposition?
Question 17****+Find \(A,B,C\) if \(\frac{4x^2+px+q}{(x-1)(x+2)(x+3)}=\frac{A}{x-1}+\frac{B}{x+2}+\frac{C}{x+3}\) and \(A=1\), \(B=2\). Express \(C,p,q\).
Question 18*****A student decomposes \(\frac{x+1}{(x-2)^2}\) as \(\frac{A}{(x-2)^2}\) only. Explain why this is incomplete and find the correct decomposition.
Question 19*****Prove by coefficient counting why \(\frac{Ax+B}{x^2+4}\) is needed for an irreducible quadratic denominator, not just \(\frac{A}{x^2+4}\).