Find the first three numerical values, starting at time n = 0, of the impulse response of the discrete-time system described by the difference equation
9y[n] ? 3y[n ? 1] + 2y[n ? 2] = x[n].
1/9, 1/27, ?1/81
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Which of the following statements is true for commercial installations of glass block?
A. Longer walls or panels of glass should not be laid to a line in mortar. B. Larger installations require that they be divided into a series of individual panels. C. Masons use a margin trowel on large commercial installations. D. Prepackaged mixes are the least expensive option for commercial jobs.
Answer the following statement(s) true (T) or false (F)
It is often safe when operating a table saw to use the rip fence and miter gauge at the same time.
Many natural resources will not last forever
Indicate whether the statement is true or false
Setting the amperage at 200 amps for a welding machine that is rated 300 amps at 60-percent duty cycle will _____
A) reduce the shielding gas flow rate by 30 percent B) allow welding current to be pulsed C) increase the duty cycle to 100 percent D) cause excessive nozzle vibration