Solution
= Solution
{c}
The <cumulative distribution function> is
$$
\boxed{F_X(x)=\mathbb P(X\leq x)=\int_{-\infty}^x f(t)\,dt.}
$$
The total integral of the nonnegative <probability density function> is one.
= Solution
{c}
The <cumulative distribution function> is
$$
\boxed{F_X(x)=\mathbb P(X\leq x)=\int_{-\infty}^x f(t)\,dt.}
$$
The total integral of the nonnegative <probability density function> is one.