Chapter 2: Problem 15
Convert each of the following mathematical formulas to a C++ expression: \\[ 3 x \quad 3 x+y \quad \frac{x+y}{7} \quad \frac{3 x+y}{z+2} \\]
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Consider a quadratic expression, say \\[ x^{2}-x-2 \\] Describing where this quadratic is positive (that is, greater than 0 ). involves describing a set of numbers that are either less than the smaller root (which is -1 ) or greater than the larger root (which is +2 ). Write a \(\mathrm{C}++\) Boolean expression that is true when this formula has positive values.
Suppose savings and expenses are variables of type double that have been given values. Write an \(i f\) -else statement that outputs the word Solvent, decreases the value of savings by the value of expenses, and sets the value of expenses to \(0,\) provided that savings is at least as large as expenses. If however, savings is less than expenses, the \(i f\) -else statement simply outputs the word Bankrupt, and does not change the value of any variables.
Write a complete \(\mathrm{C}_{++}\) program that reads two whole numbers into two variables of type \(i n t,\) and then outputs both the whole number part and the remainder when the first number is divided by the second. This can be done using the operators / and \(\%\)
Consider the quadratic expression \\[ x^{2}-4 x+3 \\] Describing where this quadratic is negative involves describing a set of numbers that are simultaneously greater than the smaller root (+1) and less than the larger root \((+3) .\) Write a \(\mathrm{C}++\) Boolean expression that is true when the value of this quadratic is negative.
Give an output statement that produces the new-line character and a tab character.
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