Remember: The formula for the period only cares about the coefficient, $$ \color{red}{a} $$ in front of the x. The formula for the period is the coefficient is 8 : $$ -7 cos (\color{red}{8}x) $$. $ period = \frac{2 \pi}{ \color{red}{a}} \\ period = \frac{2 \pi}{ 8} \\ period = \frac{ \pi}{4} $.
Monarch V7 Professional Edition's list price is $765 for a single user and $2,365 for a network of four users. A single user upgrade from V6 Standard Edition to V7 Standard Edition is $169. A single user upgrade from V6 Standard Edition to V7 Pro Edition is $279. A single user upgrade from V6 Pro Edition to V7 Pro Edition is $169. Monarch is available through leading resellers and by calling Datawatch directly at 800-445-3311.
Naturally, it won't be cheap. Microdia says it estimates the Xtra Elite will cost around $1,000 -- which converts to around Â£655 or AU$1,285 -- when it goes on sale in July, though that's not the final retail price. You can buy a 64GB card (one eighth of the size) for around $30, Â£18 or AU$35. The Xtra Elite will use version 4.0 of the Secure Digital standard, and feature an Ultra High Speed (UHS) bus with data transfer rates of up to 300MBps.