[R] Help

[t@@yi_cm2000 m@iii@g oii y@hoo@com]

Hi,my name is; William, a graduate student in the Department of EconomicsState University of New York(SUNY),at Albany.I'm using R-3.6,1 and Rstudio on Window, however, i've problems installing packageslike:gEcon,BMR on R. I've used:install.packages("gEcon") and  install.packages(type=gEcon,"source"),it didn't help.
Can any one help?ThanksWilliam

	[[alternative HTML version deleted]]