Question 25
Suppose $\dfrac xa+\dfrac yb+\dfrac zc=\sqrt2$ and $\dfrac ax+\dfrac by+\dfrac cz=0$. The printed target is $\dfrac{x^2}{a^2}+\dfrac{x^2}{a^2}+\dfrac{z^2}{c^2}$. The source options are (A) 1, (B) 2, (C) 3, (D) 4, (E) None of the above. Analyze whether the literal target is determined; also distinguish it from the possible symmetric target.
Source defect: the target repeats x²/a² as its first two terms. The literal expression is preserved. Any discussion of replacing the second term by y²/b² is conditional only; this item is assessed manually.
Source defect: the target repeats x²/a² as its first two terms. The literal expression is preserved. Any discussion of replacing the second term by y²/b² is conditional only; this item is assessed manually.