R4-1

volume = 4 π r3 / 3 p = Math.atan2(z, Math.sqrt(x * x + y * y)); R4.3. The numerator is divided by 2, then multiplied by . a, rather than divided by (2 * a). Parentheses in the denominator fix the problem: x1 = (-b - Math.sqrt(b * b - 4 * a * c)) / (2 * a); x2 = (-b + Math.sqrt(b * b - 4 * a * c)) / (2 * a); R4.4… ................
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