graphics - Plot a function with several arguments in R -

Suppose I want to plot an R function:

  weibull & lt; - Function (ALPHA, Lambaa, T) {alpha * lambada * (T ^ (alpha -1)}}  

Then the function takes the arguments of alpha, lambda and t. Plot I want to create a plot in alpha = 0.5, time of 0 to 2 and lambda = 1, 2, 4, 8, 16 and second, alpha = 1, time 0 to 2 and lambda = 1, 2, 4 , 8, 16.

In order to plot the work with just one argument in the past, I have used the curve and then have done the ADD = true if I am the same On a curve. For example, I've used it in the past:

  lambda < - 0.5 pdf & lt; - Function (x) {lambda * XP (-Lamda * x)} Survival & lt; - Work (X) {exp (-lambda * x)} plot (curve (pdf, 0, 6), type = "l", ylim = c (0, 1), lwd = 3, ylab = "", xlab = "Xaxs =" i ", yaxs =" i ", main = expression (paste (" exponential distribution ", lambda," = 0.5 "), cex.main = 2, cex.axis = 2, cex.lab = 2) Curve (existence, 0, 6, plus = true, col = "plum4", lwd = 3)  

But in this example, there is only one argument in the function, which is x. Whereas, now I want to vary Lambda, T and Alpha.The curve function does not work and I'm not sure how and how it will reach.