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# C1 OCR solomon paper increasing functions

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1. Hi can anyone help me with Question 3 on the OCR Solomon paper H

paper--https://a9497d7f220e174d38d014b2b1d8...20C1%20OCR.pdf

Mark scheme -- https://a9497d7f220e174d38d014b2b1d8...20C1%20OCR.pdf

I cant understand why dy/dx has been solved greater than or equal to 0 do you not show that a function is increasing my solving dy/dx> 0
Hi can anyone help me with Question 3 on the OCR Solomon paper H

paper--https://a9497d7f220e174d38d014b2b1d8...20C1%20OCR.pdf

Mark scheme -- https://a9497d7f220e174d38d014b2b1d8...20C1%20OCR.pdf

I cant understand why dy/dx has been solved greater than or equal to 0 do you not show that a function is increasing my solving dy/dx> 0
It's a mistake. The function is stationary at and .
3. (Original post by notnek)
It's a mistake. The function is stationary at and .
AFAIK, increasing is and strictly increasing is .

Edit: after looking it up, I think I agree with you. for is increasing - which is where my confusion stemmed from. Apologies.
4. (Original post by notnek)
It's a mistake. The function is stationary at and .
Glad its a mistake. Cheers for clearing that up

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