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1) Vid ett fdelsedagskalas ska en gst skjuta ivg en raket. Raketens hjd ver marken kan beskrivas med andragradsfunktionen f(x) = -2 x 2 +

1) Vid ett fdelsedagskalas ska en gst skjuta ivg en raket. Raketens hjd ver marken kan beskrivas med andragradsfunktionen f(x) = -2x2 + 8x dr f r raketens hjd i meter ovanfr marken och x r avstndet i sidled frn dr gsten str och skjuter ut raketen.

a) Hur lngt frn utskjutningspunkten trffar raketen marken? b) Hur hgt nr raketen som hgst? Anvnd dig av algebraisk lsning fr att lsa uppgiften.

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