Digitalis canariensis Digitalis canariensis Digitalis canariensis is a member of the genus "Digitalis". It is commonly called Canary Island foxglove. This species is part of section "Isoplexis", which was temporarily accepted as an own genus. The synonym "Isoplexis canariensis" is still established. In general data concerning the state of "Isoplexis"-species differ depending on the source currently (2017). Individuals of these species are shrubby and evergreen plants that grow up to 150 cm tall. The plant has lanceolate-ovoid leaves. The leaf margin is sawn. In the upper part, the leaves are arranged like a rosette. The inflorescence is a cluster of orange-reddish, 3
Derive (computer algebra system) calculators. Derive (computer algebra system) Derive was a computer algebra system, developed as a successor to muMATH by the Soft Warehouse in Honolulu, Hawaii, now owned by Texas Instruments. Derive was implemented in , also by Soft Warehouse. The first release was in 1988 for DOS. It was discontinued on June 29, 2007 in favor of the TI-Nspire CAS. The last and final version is Derive 6.1 for Windows. Since Derive required comparably little memory, it was suitable for use on older and smaller machines. It was available for the DOS and Windows platforms and was used also in TI