May 24, 2005 · Now after t=3 the declining ramp levels off to horizontal so we need to add a single ramp function for when t>3, giving us R(t-3). Now f(t) = R(t) - 2 * R(t-1) + R(t-3), for 0 < t < 4. Starting at t=4 the function steps up from -1 to +1, so we need to add two step functions at this point, which would be 2 * u(t-4). Now the piecewise function in Buy a pre-owned electric vehicle (from N$200 000:00) from us & see how from day 1 you will save your NAD's! Skip to the content. Search. Electric Vehicles Namibia. Previously owned in Namibia: Nissan Leaf 2011, 113 000 km, excellent condition, N$ 95 000 Call +264 81 3055 372.However, we broadly advise that our cable guard ramps are able to take the weight of cars, vans and lorries passing over the cable ramps at low speeds. 5 Channel Cable Guard Ramp. Size: 890mm (L) X 590mm (W) x 75mm (H) Male & Female connection with yellow PVC Flap. Internal channel dimensions of 60mm x 40mm. Weight: 19kg.Unparalleled integrations. Save days of manual labor by connecting Ramp to every system you’ll ever need, from onboarding to reconciliation. Get unparalleled visibility of your business and uncover hidden value, from the big picture to the smallest detail. Time is money. Save both.