My multivariate calc was a separate course from regular calc 1/2/3

It’s been out on steam for a year if not longer.

I moved from Galaxy S10 to Xperia 1 V precisely because none of the phones in the Galaxy line support aptx.

Also, there’s aptx, aptx-hd, aptx-LL (low latency), and aptx-adaptive. My headphones support only aptx and aptx-adaptive and I really wanted support for the latter. There’s licensing involved so not all devices support the whole range of aptx standards.

Not only does the Xperia have a headphone jack, it supports aptx for Bluetooth headphones! No matter if you prefer wired or wireless, it’s not skimping on either.